The Shaving Cadre

Welcome to The Shaving Cadre, a forum dedicated to gentlemanly discourse about wet shaving and other topics of common interests. Membership is always free so register today and join in the fun

Fragrance Terms

Chamomile

Chamomile (or camomile in British English) is the common name for several herbal plants of the Asteraceae family, typically having flowers with a compact yellow center and small white petals, and often confused with the daisy flower. The word 'chamomile' was derived via late Latin and French from the Greek word chamaimēlon, meaning 'earth apple' because of the apple-like scent of the plant that was noted by the ancient Greek Pliny the Elder. There are two species most commonly used in perfumery: German chamomile (Matricaria chamomilla or M. recutica) and Roman chamomile (Anthemis nobilis or Chamaemelum nobile). German chamomile is also known as blue, wild, Hungarian chamomile, or scented mayweed. Roman chamomile is sometimes called English, sweet, 'true,' or garden chamomile or Whig Plant. Also used to a lesser extent is Moroccan chamomile (Cladanthus mixtus, known in perfumery as Ormenis multicaulis), which is unrelated botanically to the others.
AfHsAcK.jpg
H7NVvrl.jpg


Roman chamomile is native to the Middle East, Eastern Africa, and parts of Europe. It is mainly cultivated now in England, France, Germany, Belgium, Spain, Italy, and Morocco. Smaller crops are grown in the United States and parts of South America.
DQvAjaK.jpg
AvMg2sH.jpg


German or wild chamomile is native to Eastern Europe and Asia, and it is primarily grown commercially in France and Eastern Europe.
tWAJy7o.jpg
oz72OkN.jpg


Moroccan chamomile is native to the Mediterranean region, primarily in North Africa, and often has been considered a weed. It is grown in North Africa, Europe, and North America.
aHr77TT.jpg


Both Roman and German plants now grow wild in various parts of the world. Both have leaves with a scent reminiscent of apple or pineapple and have white, daisy-like flowers with yellow centers. Roman chamomile produces flowers in June and July in the Northern Hemisphere.

Chamomile Essential Oil
For essential oil production, the choice of the right harvest date is crucial for obtaining the highest oil concentration, which occurs when the florets become horizontal or point slightly downward.
253xcV4.jpg


The flowers are either plucked by hand or with simple devices such as pluck combs or rakes in small-scale harvests, but mechanical gathering is used in larger operations. When mechanical harvesting techniques are used, parts of the stalks are also taken and are separated later. This is done by hand, by double-walled counter-rotating drum screens, or a combination of both. In harvesting of chamomile for tea, in contrast, the whole plant is harvested with rotary choppers. Whichever gathering method is used, the harvest produce is dried, either naturally in the sun or under a roof or by rack or belt dryers, to reduce the water content from about 80% to 10-11% in order to prevent fermentation.
NdzLlqO.jpg
exngBDG.jpg
9BzXezi.jpg
AAZhrRm.jpg
ovLlQuK.jpg


Chamomile essential oil is extracted through steam distillation of the dried flowers, sometimes with a small amount of flower stalks included. Roman chamomile yields about 1.7% oil, and German chamomile produces about 0.2-0.4%.

German or wild chamomile essential oil is a deep blue color due to one of its constituents changing chemically during the distillation process, and the oil is medium viscous. The scent is sweetly smoky, floral, and herbaceous, with fruity, tobacco, animalic, and straw tones. It shines as a top note but also runs as a theme through a fragrance's heart and lingers into the drydown. Due to its high cost, it usually is found in a 3% jojoba blend. The absolute is even darker blue due to a higher concentration of chamazulene. More recent extraction methods, including CO2 superfluid extraction, produce an oil with a much lighter color. German chamomile oil is used more often as a flavoring agent in liquors and other beverages than in perfumery.
3aoB96z.jpg
puDvEQU.jpg


Roman chamomile essential oil is light yellow to clear, with low viscosity. It has a soft and delicate, but spicy, sweet, honey-like aroma with a hint of apple. It also is usually found in a 3% jojoba blend. It is somewhat unstable in perfumery, but it is included sometimes as a top or heart note in masculine fragrances, especially those of the chypre and fougere families. It was used more often in the past, especially in old classic perfumes. Roman chamomile is not often used for flavoring except as traditional chamomile tea, since the oil has a medicinal bitter taste.
vGhYuMx.jpg
JD7OA5K.jpg


Moroccan chamomile essential oil is yellow and has a fresh, herbal, aromatic scent with a camphorous nuance. It has a sweet balsamic undertone that is reminiscent of amber.

Chamomile Oil in Perfumery

Generally chamomile is classified in the herbaceous or aromatic family of scents. In light concentrations, chamomile essential oil has an apple-tinged, grassy-green character, but at full strength it is darker and dirtier, suggesting the smell of soil mixed with crumbled leaves, intense and a bit damp and woody, somewhat reminiscent of cocoa. It is sometimes used to boost and draw out the nuances of other ingredients, especially woods and incense. Chamomile add a warm touch to most fragrances. Both oils blend quite nicely with citrus notes (especially bergamot and grapefruit), florals (lavender, jasmine, geranium), tea tree, clary sage, ylang-ylang, patchouli, and musk. Chamomile also pairs really well with rose, its smoky bitterness giving a richer dimension to the sweet rose, while the rose tempers chamomile's herbal edge. It is also suited for darker, moody, decadent blends, such as Gucci by Gucci, where it adds luminosity and lightness. It is quite common now for perfumers to use blends of two or even all three of the chamomiles mentioned above in their fragrance compositions, varying the proportions for different effects.

History

Chamomile knowledge and use date back thousands of years. The first literary mention of it is from ancient Egypt, where it was included in shampoos, perfumes, and cosmetics, used to treat fever and skin ailments, and included in embalming oil mixes. It was used by the Greeks for a variety of purposes, including treatment of headaches and inflammation. Chamomile also was known to the Romans, who used it for incense and in beverages. (Ironically, the name 'Roman chamomile' does not come from this time, but rather from an arbitrary naming of the herb in the 19th century by a plant collector who happened to find some growing in the Roman Colosseum.) The plant was listed in the pharmacopoeia of Würtenberg as a carminative, painkiller, diuretic, and digestive aid. Joachim Camerarius was the first to name Chamaemelum nobile in 1598. Anglo Saxons considered chamomile to be one of the 'nine sacred herbs' and spread it on floors for scenting of ceremonies, as well as for healing illness. There is an entry about chamomile in the 11th century Old English ILllustrated Herbal, and Nicholas Culpepper's 17th century Complete Herbal has an illustration and several entries about 'chamomel.' Commercial cultivation of chamomile began in Europe in the 16th century.
3bplXXm.jpg
euCcnQE.jpg


In Europe, chamomile was used in making beer and ale before brewers turned to hops instead. Unlike for tea, in which only the flowers are used, the whole plant was used in the alcoholic beverages, adding a bitter flavor. Chamomile, especially the German one, has been used in many cultures for relaxing teas and tisanes. In Spain, chamomile is known as manzanilla, which means 'little apple,' and it is used to give Manzanilla sherry its floral notes.

Chamomile is used ornamentally in gardens and sometimes is planted on paths that are walked upon, which releases its unusual scent. Roman chamomile is a small evergreen perennial plant that grows low to the ground (up to 12 inches) and is often used as a ground cover. German chamomile, on the other hand, is a taller (24 inch) annual, propagated by seed planting or by letting the flower heads go to seed for the next year. Roman chamomile has larger flowers than the German variety. The plants often flower 2 or 3 times a year, allowing for multiple harvests. Moroccan chamomile is an annual bushy plant, and it blooms only during the rainy season. It is claimed that German and Roman chamomile plants improve the health of sickly garden plants when it is planted near them.
nH5i5Mh.jpg


Medicinal Use

Chamomile is reputed to reduce skin irritation and redness, promote wound healing, and treat and prevent acne. There have also been claims of its therapeutic benefits for hundred of years for a large number of other ailments. German chamomile is said to be the preferred oil for anti-inflammatory purposes, while Roman chamomile is claimed to have anti-rheumatic qualities. Controlled studies have demonstrated some possible antioxidant, anti-inflammatory, and anti-spasmodic properties, but experts disagree about whether or not there is much evidence of significant medicinal efficacy for any disorders; and the FDA has not approved chamomile for medical use. Chamomile oil and tea are said to have calming and soothing properties, relieving irritation and impatience and improving sleep quality. Herbalists generally say that the most effective use of chamomile via inhalation in aromatherapy, although it is also thought to be effective in bar soaps, oiled bath water, and lotions.

People who are allergic to ragweed (also in the daisy family and a very common allergen) may be allergic also to chamomile due to cross-reactivity, so they should watch for any signs of skin irritation from chamomile perfume products.

Masculine fragrances with significant chamomile:

Absolument Parfumeur La Treizième Note
Anucci Men
Cadillac for Men, Black, Lite
Calvin Klein Calvin, Eternity Summer
Dior Fahrenheit
Estiara Cheval (Green)
Farfalla Uomo, Vetiver
Francesco Smalto
Francis Kurkdjian Oud Silk Mood
Germaine Monteil Realm
Giorgio Armani White
Halston Catalyst
Harrods Bond No. 9
Houbigant Fougere Royale
Hugo Boss Baldessarini
Humiecki & Graef Skarb
IF Jeans Sorella Fontana
Jean Paul Gaultier Fleur du Mâle
Lancome Balafre, Belafre Brun
Maurer & Wirtz Tabac Original
O Boticario Uomini Sport
Oleg Cassini for Men
Ralph Lauren Polo, Polo Bear Edition
Rochas Monsieur Rochas
Tom Ford Extreme
Xerjoff Shooting Stars Oroville

There are many 'unisex' chamomile scents.
 
Aldehydes-Aldehydic

An aldehyde is an organic hydrocarbon chemical containing a terminal carbonyl functional group (-CH=O), consisting of a carbon, a hydrogen, and an oxygen atom. It is a highly reactive compound created by partial oxidation of a primary alcohol and is easily converted to a corresponding acid.
7V24rGY.jpg


Aldehydes can be derived from natural or synthetic materials. They are present in many natural substances, such as orange rind, rose petals, and cinnamon bark. The general name was coined by the German chemist Justus von Liebig as a contraction of the Latin alcohol dehydrogenatus, meaning 'alcohol without hydrogen.' The aldehyde group is sometimes called a formyl or methanoyl group. Other groups of organic compounds containing carbonyl groups include ketones and carboxylic acids.
UXXs2dk.jpg


In perfumery, the term aldehyde indicates a molecule containing a shorter (C6-C12) straight-chained (aliphatic) aldehyde. The scent of the aldehyde depends upon the alcohol from which it is produced. In perfume classification, aldehydes are often called the 'modern' group. The shortest (C1-C5), lower-weight aldehydes smell bad, most like rotten fruits, and are not used in scents. There are different types of scents associated with the carbonyl function, but the most common ones to which the term 'aldehydic' refers range from a somewhat sharp, crisp, and metallic character to slightly starchy, fatty, or creamy tone.
aLqsN4j.jpg
3a5KzHM.jpg
Hn63Hrt.jpg


The overall scent in perfumes is often described as having hints of flowers and/or citrus, or like freshly washed linens, with a tone that is both rich and light. They frequently are divided into a 'fatty' group, with powerful but pleasant smells that become citrusy with dilution, and a 'waxy' group that has more floral odors which become sweeter upon dilution, although some aldehydes have both properties. Green floral aldehydes give perfumes sharper, 'outdoor' notes, while woody floral aldehydes add tones of cedar, patchouli, or oak. Aldehydes have a distinctive waxy, 'soapy' smell similar to that of a blown-out candle. (The smell of candles actually is provided by the aldehydes, which are products of incomplete combustion of paraffin.) The aroma is quite strong and intense, becoming pleasant only when diluted down to 1% or less.
lIKjMa9.jpg

9SubeoD.jpg
vrfVIT1.jpg


Generally, an 'aldehydic' fragrance is one to which aldehydes have been added for their sparkling brilliance, vibrancy, and strong, incisive effect, usually with an exciting top note. They are said to 'move' when you smell them, not staying static. Aldehydes 'adapt' to the natural skin scent, enhancing other notes in a composition, and are used as modifiers as well as for their scent alone. Aldehydes have been used heavily in perfumery for a long time because of their low price, their intensity, and their ability to mask unpleasant tones of soap bases.

Aldehydes were first used in the 1905 edition of L.T. Piver's Rêve D'Or, by perfumer Louis Armingeat, then in Houbigant Quelques Fleurs in 1912 and Alphonse Rallet Bouquet de Catherine in 1913. One of the first 'aldehydic' fragrances using the chemical in a higher amount was the famous Chanel No. 5 launched in 1921, which had an unprecedented concentration of almost 1% aldehydes, primarily C10, C11, and C12. Coco Chanel's intention was to create a perfume that smelled like woman rather than like flowers, saying, "Women do not want to smell of a bed of rose." (It is said that Chanel's perfumer, Ernest Beaux, mistakenly added much more aldehyde than she had requested, but she loved the result and kept it.) No. 5 became so popular that many subsequent 'aldehydic fragrances' used the same combination. Although there is hardly a single fragrance now without some type of aldehyde in it, more recent ones usually do not contain aldehydes in large concentrations because that is perceived to be old-fashioned. Many people now prefer a closer-to-the-skin scent, more subtle and more politically correct.
NoRZLjr.jpg
gGYsohW.jpg
XTQeL7a.jpg

UaElVWj.jpg
RiLX040.jpg


The aldehydes most commonly used in perfumery and their scents:

C7 (heptanal) - sharp, herbal, green, grassy, slightly fruity, reminiscent of fresh outdoor breezes
C8 (octanal) - citrus, suggesting oranges, lemons, and orange peel
C9 (nonanal) - rose, with hints of rosewood, jasmine, and orange
C10 (decanal) - orange rind zest
C10 citral - citrus, especially lemon
C11 (undecanal) - bitter coriander, fresh, 'clean'
C12 (lauric dodecanal) - lilac, violet, with a touch of conifer
C13 (tridecanal) - grapefruit and grapefruit peel, waxy, soapy, slightly floral
C14 (gamma undecalactone) - peach
4oJcLO9.jpg
iDGehmh.jpg
itvveQ3.jpg
e8F2nsV.jpg
cHXZriC.jpg
pnknZ8j.jpg


Other aldehyde variants that are used:

strawberry glycidate - sweet strawberry, floral, honey
gamma nonalactone - sweet, creamy, buttery, hints of coconut
amylcinnamic aldehyde - jasmine
anisaldehyde - anise and a hint of hawthorn
benzaldehyde - almond
cinnamaldehyde - cinnamon
cuminic aldehyde - cumin
cyclamen aldehyde - cyclamen
furfural - almond
heliotropin - floral, similar to vanillin or cherry
hexanal (C6) - green and apple notes
hexylcinnamic aldehyde - jasmine
lilial - lily-of-the-valley, linden
mandarine aldehyde - mandarin orange, coriander
melonal (melon aldehyde) - melon, green, cucumber
Mircenal (citrus carbaldehyde) - floral, citrus, ozone
muscone - musk
phenylacetaldehyde - green narcissus, hyacinth
propanal (propionaldehyde) - sweet, fruity
triplal - green grass
vanillin (4-hydroxy-3-methoxy-banzaldehyde) - sweet, creamy vanilla

Aldehydes have been used in many versions of soaps and detergents to give them a 'fresh lemon scent,' especially Lux soaps. Aldehydes also are used for the manufacture of synthetic resins (e.g. bakelite), as well as dyes, flavorings, medications, and other chemicals. Some are used as preservatives and disinfenctants. Some critics complain that aldehydes can be toxic even in perfume concentrations, although research about this is contradictory.
Bjk43gt.jpg



Masculine fragrances with prominent aldehydes:

Adidas Active Bodies, Team Force
Adolfo Dominguez Agua Fresca Extreme
Alfred Sung
Amordad Beaumont White Gold
Aramis Anniversary Edition, Devin, Havana, Ice, JHL, New West
Azzaro Chrome Sport, Decibel
Baldessarini Cool Force Sport
Bvlgari
Calvin Klein CK One Red, Eternity
Cartier Must pour Homme
Chanel Allure Sport
Christian Dior Eau Sauvage, Fahrenheit 32
Coty Stetson Siera
Dana Wind Drift
Davidoff Echo
Daniel Hechter Caractere
Estee Lauder Intuition
Faberge Brut Identity
Faberlic Cruiser Turbo, Incognito
Farina Russisch Leder
Floris 1927
Gianfranco Ferre Lui
Giorgio Beverly Hills Giorgio, VIP
Givenchy Insense
Guerlain Heritage, Vetiver
Guy Laroche Horizon
Helena Rubinstein Men's Club
Hermes Equipage
Hugo Boss Cashmere Patchouli, Elements, Spirit
Jacques Bogart Force Majeure, Witness
Jean Paul Gaultier Le Male Airlines, Le Male Andre, Le Male Popeye, Le Male Superman
John Varvatos Dark Rebel Rider, Rock Volume One
Kanebo Eroica, Gilvan, HF, Hinotori, Valcan
Karl Lagerfeld Classic, Photo
Liz Claiborne Curve Chill
Maurer & Wirtz Tabac (Original)
Nautica
Nina Ricci Phileas
Oleg Cassini Reporter
Oscar de la Renta Oscaar pour Lui
Pal Zileri Lab i-White
Paloma Picasso Minotaure
Ralph Lauren Polo Black, Polo Sport, Safari
Rasasi Shaghaf
Rochas Eau de Rochas
Roja Madison
Royal Copenhagen
Salvador Dali Salvador
Valentino Vendetta
Versace Green Jeans
Weil
X-Bond Lion Gold
Yves St. Laurent Kouros, l'Homme Libre, l'Homme Sport, Rive Gauche, Y
 
Ambergris/Ambrox/Ambroxan

Ambergris ('ambergrease') is a solid, waxy substance at one time thought to come from an unknown creature believed, according to a 1696 letter published by the Royal Society of London, "to swarm as bees, on the seashore, or in the sea." Some at the time thought it was a product of underwater volcanos or the droppings of seabirds. Marco Polo knew that Oriental sailors hunted the sperm whale for ambergris, but he thought that the whales swallowed it with their food. It is known now that ambergris is produced as a fatty bile duct secretion of the digestive system of some species of sperm whales (especially Physeter macrocephalus or P. catodon). It appears that only a small percentage of the whales, and perhaps only the male whales, produce it. Ambergris can be found floating on the sea surface or washed up on coastal shores, most commonly in the southern hemisphere, and it sometimes is found in the abdomens of dead whales. The name comes from the Latin ambra grisea or Old French 'ambre gris,' meaning grey amber (to differentiate it from ambre jaune, the yellow vegetal resin now just called amber).
xge0Dz1.jpg


Because the horny beaks of giants squids have been discovered within lumps of ambergris, scientists have theorized that the substance is produced to ease the passage of hard, sharp, irritant objects that the whale has eaten. There is some uncertainty and controversy about how ambergris is expelled from the whale, and no one has witnessed it. Previously it was assumed that the whales simply vomited it, but the current predominant idea is that it is primarily passed in fecal matter, but with masses that are too large to be passed through the intestines expelled instead through the mouth. It is not known exactly how it is formed or whether the process is normal or pathological. In Moby Dick (1851), Herman Melville notes the irony that "fine ladies and gentlemen should regale themselves with an essence found in the inglorious bowels of a sick whale."

Ambergris is found in lumps of various shapes and sizes, usually weighing from 15g (1/2 oz.) to 50kg (110 lbs.). One chunk found in the Dutch East Indies weighed 635kg (about 1400 lbs.). Initially black, soft, and viscous, with a strong fecal odor, it gradually hardens following months to years of aging and photodegradation and develops a light grey or yellow color and a more crusty/waxy texture (described as being like clay). With further oxidation in the ocean, a white coating forms and thickens over time. Aged ambergris has a subtle, sweet, and animalic scent, which has been described as a richer and smoother version of isopropranol. It is soluble in volatile and fixed oils. When raw ambergris is heated in alcohol and then cooled, it produces white crystals of the triterpene alcohol ambrein. When oxidized, ambrein breaks down to ambroxide and ambrinol, the main scent components.
J1VT1VC.jpg


Ambergris seems to require years to form. It can float for years before making landfall. It is found primarily in the south Atlantic Ocean and on the coasts of South Africa, Madagascar, the East Indies, the Maldives, Brazil, China, Japan, India, Australia, and the Molucca Islands. Most commercially collected ambergris comes from the ocean around the Bahamas. Dogs are attracted to the smell of ambergris and have been used to find it by commercial searchers. Fossilized ambergris dated to 1.75 million years ago has been found.

Freshly produced ambergris has a marine, fecal odor. As sperm whale expert Hal Whitehead of Dalhousie University in Halifax, Nova Scotia, says, "It smells more like the back end than the front." As it ages, the smell grdually transforms into a sweet, earthy scent. Says ambergris broker Bernard Perrin, "It ages like fine wine." In perfumery, ambergris was commonly ground into a powder and dissolved in dilute alcohol. Its perfume fragrance is often described as velvety but crisp, warm, marine, sweet, earthy, and animalic, and it sometimes is termed woody, voluptuous, or having a salty seaweed, caramel, or cured tobacco leaf aspect. Ambergris is widely used in accords with florals, woods, and musks and other animalic notes to add an opulent, seductive quality. Much as salt enhances flavors, ambergris seems to enrich other scents. Its most unique aspect has been said to be its radiance and tenacity. Although the scent itself is not heavy or overwhelming, it has greater sillage than nearly all other perfume components. As a large, heavy, lipophilic molecule with an affinity for other perfume molecules, ambergris also has fixative and stabilizing properties and probably was used for that purpose initially rather than for its scent.


Perfumers consider ambergris to have three main quality categories:
White/Grey Ambergris - This has been in the ocean for the longest time (usually 20-30 years or more) and mainly occurs in smaller pieces due to weathering. Ideally it has a whitish or partly white coating from air/salt water oxidation and a light interior color. Very old pieces can be brittle and powdery. The fragrance has at least some sweetness and is light and subtle. This is the highest quality.
Standard Ambergris - This is normally colored brown/grey or ash, layering can be seen, and pieces can be larger. The fragrance, while still pleasant, is somewhat too strong.
Low Quality Ambergris - This often is black and usually is still soft and pliable. The scent is quite rough, heavy, animalic, and/or fecal (sometimes described as being like that of an uncleaned stable).
jTNkv7b.jpg


Complicating the use and perception of ambergris is the fact that due to the complexity of its fragrance and variations in people's olfactory senses, individuals may have quite differing experiences of the scent, similar to reactions to other animalic aromas such as musk. While a particular sample might have an earthy, mossy, agreeable smell to one person, to another it might simply have the neutral or disagreeable odor of freshly turned soil or even compost.

Ambergris also has been used for centuries in food and drink. It has been added to foods as a spice: eggs with ambergris reportedly was a favorite of King Charles II of England. It was used as a flavoring agent in Turkish coffee and in hot chocolate in 18th century Europe. A recipe in the English and Australian Cookery Book from the mid-19th century called for ambergris to be added to rum, almonds and spices to make Rum Shrub liqueur.

Ancient Chinese and Egyptians burned ambergris as incense, while in modern Egypt it still is used for scenting cigarettes. During the Black Death in 14th century Europe, it was believed that carrying a ball of ambergris could help to prevent infection. And during the Middle Ages, Europeans used it as a medication for headaches, colds, epilepsy, and other ailments. Middle Eastern populations have powdered and ingested it to increase strength and combat heart and brain disorders, and some cultures have considered it an aphrodisiac.

Because of declining whale populations, the International Whaling Commission instituted a ban on commercial whaling in 1982. Although ambergris is no longer harvested legally from the animals, many countries also prohibit its trade as a component of the more general ban. For example, Australia bans commercial export and import of ambergris under its Environment Protection and Biodiversity Conservation Act of 1999. Importation of marine mammal products has been banned in the U.S. since 1972, according to the Convention on International Trade in Endangered Species of Wild Flora and Fauna (CITES); however, ambergris is not mentioned specifically by name. It is actually considered by some to be a waste product, not a physical part or direct derivative of the species and therefore not covered by the provisions of the Convention. Since natural ambergris is extremely rare and valuable, illegal harvesting of whales for it continues in some areas of the world.

The cost, rarity, and legal ambiguity involved with ambergris use has led most perfumers to search for viable, sustainable synthetic alternatives. Ambroxan (Kao), a synthesize form of ambroxide first developed in 1950, is now produced commercially and used extensively in the perfume industry. It is synthesized from sclareol, a component of the essential oil of clary sage. Sclareol is oxidatively degraded to a lactone, which is hydrogenated to a diol and then dehydrated to form ambroxide. The plants make sclareol only in small amounts, and it is very labor-intensive to extract and purify it. But researchers have isolated the DNA which produces two enzymes that create sclareol in the plant and have inserted it into E. coli bacteria to produce large amounts of sclareol cost effectively. University of British Columbia scientists developed a similar process for the balsam fir tree. They transferred part of the tree genome that produces the scent compound cis-abienol into yeast, which can be used to make large quantities of it much like the yeast is used to make malaria medication ingredients. Cetalox is a similar commercial synthetic that is sometimes employed, and the related chemical compounds ambreine, grisalva, Ambrox (from balsam fir, Firmenich), and Ambrofix (Givaudan) also are used. True ambergris is an ingredient very rarely in American perfumes now but can still be found in a few, especially those from before 1980; and it still is used in some Middle Eastern and European (primarily French) products, because not all of its scent qualities have been synthesized commercially, and the synthetics do not completely mimic the natural form. The sperm whale population is slowly recovering from its near extinction in the late 19th century, so it is possible that natural ambergris will once again become more commonly found and utilized legally.

'Masculine' perfume products with significant ambergris include the following:

Abercrombie & Fitch Batch No. 46
Acqua di Parma Colonia Ambra
Aquaflor Firenze Azar
Axe Provocation
Beverly Hills Polo Club Sport 9
Burberry Mr. Burberry Element
Creed Aventus, Green Irish Tweed, Acier Aluminium
Dolce & Gabbana Light Blue Swimming in Lipari
Francois Deli Fumee Toxique
I Profumi di Firenze l'Uomo di Pitti
Karen Low Pure Blanc
Louis Armand Ultimate Drive, Alter Ego Espirit
Miraculum Red
Penhaligon's Mr. Harrod
Thera Cosmieticos Serifos
TianDe Joss
Yanbal Arom Absolute
Yves St. Laurent l'Homme
Zara Aromatic Future
 
Anise/Star Anise/Licorice

Anise
(Pimpinella anisum, known as anisum vulgare), sometimes called sweet cumin, has a unique aroma that is easily recognized in fragrances. It has been described as sweet, warm, and soft, yet very strong. Its fruit, from which anise oil is extracted for perfumery, is called aniseed.

The name 'anise' is derived via Old French from the Latin word anisum or the Greek anison, referring to dill. Anise is an herbaceous annual plant related botanically to carrots, tarragon, fennel, dill, cumin, caraway, and other members of the Apiaceae (parsley) or Umbelliferae family. It grows to a height of 3-4 feet. The leaves at the base of the plant are simple, 1/2-2 inches long, and shallowly lobed, while leaves higher on the stems are feathery pinnate, divided into numerous small leaflets. The flowers are either white or yellow, about 1/8 inch in diameter, and produced in dense umbels (distinctive flower clusters in which stalks of nearly equal length spring from a common center and form a flat or curved surface). The aniseed fruit is an oblong dry schizocarp (splitting into single-seeded parts when ripe).
ZxpytG2.jpg
UTcbZl8.jpg
AUwwKme.jpg


As with all spices, the composition of anise varies considerably with origin and cultivation method. Anise products typically contain more than 0.2ml volatile oil per 100g of spice. The essential oil is obtained by steam distillation or supercritical carbon dioxide extraction of the seeds, producing a yellow to nearly colorless liquid. The yield of essential oil is influenced by the growing conditions and extraction process, with supercritical extraction being more efficient. Regardless of the method of isolation, the main component (80-90%) of the oil is anethole, which produces the characteristic odor and flavor. Anethole (also known as anise camphor) is an organic derivative of phenylpropene, a type of aromatic compound that occurs widely in nature. In addition to contributing a large component of the odor and flavor of anise, star anise, and fennel, it also is present in anise myrtle (Myrtaceae), licorice plants (Fabaceae), camphor, and magnolia blossoms.

Anethole has been extracted in the laboratory from anise and fennel since the Renaissance, initially by alchemists. It was first investigated clinically by the Swiss chemist Nicolas-Théodore de Saussure in 1820. In 1832 the French chemist Jean Baptiste Dumas determined that the crystallizable components of anise oil and fennel oil were identical, and he determined anethole's empirical formula. And in 1845, the French chemist Charles Gerhardt coined the term anethole — from the Latin anethum (anise) + oleum (oil).

The plant is native to Greece, Egypt, and southwest Asia but is now also grown extensively in Spain and the West Indies. Anise was first cultivated in Egypt and the Middle East about 4000 years ago. Romans cooked it into little flavored cakes called mustaceoe that were served at the end of feasts, and it may have been used in Biblical times for paying tithes and taxes. It was used in Greece as a cure for insomnia, chewed in the morning to freshen the breath, and mixed with wine as a remedy for asp bites. In Turkish folk medicine, its seeds have been used as an appetite stimulant, a tranquilizer, and a diuretic. By the 19th century it was brought to Europe for use in medicinal products, either in small doses as aqua anisi ('Water of Anise') or larger doses as spiritus anisi ('Spirit of Anise'), and including digestives and carminatives (flatulence reducers). It has been used in several cultures to treat helminthic, nematodal, bacterial, fungal, and yeast infections. Anise still is taken as a digestive after meals in parts of Pakistan and India.

Anise also finds uses in flavoring foods and drinks in many cultures. The leaves and seeds, whole or ground, are used alone or in combination with other herbs in preparation of teas and tisanes, as well as in curries, seafood dishes, alcoholic beverages (in which its slight solubility in water but high solubility in ethanol causes certain anise-flavored liqueurs to become opaque when diluted with water, the 'ouzo effect'), breads, cakes, and candies and other sweets. It is used in the United States in some root beers, such as Virgil's.

Anise is used on fishing lures to attract fish, and fishermen and hunters use anise soap to mask human scents from their hands. Builders of steam locomotives in Britain incorporated capsules of aniseed oil into white metal plain bearings so that the distinctive smell would give warning in case of overheating. And anise is a natural food plant for the larvae of some species of butterflies and moths, despite its potent fumigant insecticidal and repellant properties. Anethole is an inexpensive chemical precursor for paramethoxyamphetamine (PMA), a designer drug of the amphetamine class, and is used in its clandestine manufacture.

In perfumery, anise often is combined with vanilla, spices, musk, woods, florals, and earthy scents. It sometimes is presented as the dominant note but most often as a subtle minor one.

Masculine fragrances featuring anise:
l'Aqua di Fiori U.Man XS
Instituto Espanol Aire de Barcelona
Nickel Ull Lala
X-Bond Orange
Kenzo Air
Zara Scent #2
Chanel Allure pour Homme
Givenchy Pi
Sigilli Pyrgos
Benetton Cumbia Colors Man
l'Instant de Guerlain pour Homme
Axe Shock
Azzaro pour Homme
Cereus No. 11
Lavoisier Lider Black
Brut Black (Brut Titan)
Crabtree & Evelyn Black Absinthe
Emper Elegante
Ligne St. Barth Homme
Arran Lochranza
Yves St. Laurent La Nuit de l'Homme
Ralph Lauren Chaps Musk
Roger & Gallet Open White
Herrera 212 VIP Black
DKNY Energy for Men
Mugler B*Men
Antony One Black
Versace Blue Jeans
Claiborne Curve Wave
Michael Jordan Legend
Marc Joseph for Men
Aramis Tuscany per Uomo


Star anise (Illicium verum, meaning 'true enticement'), unrelated to anise, is a spice plant indigenous to northeast Vietnam and China and now also cultured in Japan and areas of Southeast Asia. It grows as a small- to medium-sized evergreen tree, a member of the magnolia family with dark green leaves. It produces tiny flowers followed by the distinctive star-shaped fruit with (generally) eight points, each point containing a seed. The fruits are harvested just before ripening, when the essential oil content is highest. Sun-dried, the whole fruit and seeds can be used as flavorings, and both can be ground. It is the dominant flavor in Chinese 'five-spice powder.' It has been used widely in Asia to flavor pork and chicken, in teas, and as a table seasoning, and it is a major ingredient in phở, a Vietnamese noodle soup. It is used in French mulled wine called vin chaud (hot wine), and it deepens and enriches the flavor of coffee when steeped in it. In the West it also is used to enhance the flavor of meats. As with aniseed, the flavor comes primarily from anethole oil, but the flavor of star anise is considered to be stronger and more bitter than aniseed.
xeaY6kh.jpg
DKWtkrM.jpg


The ornamental tree is often grown for its appearance, scented flowers, and fragrant leaves. In French it is known as La Badiane. Star anise is said to ward off the 'evil eye,' bring good luck in money and love matters, and give clarity to health matters in the form of visions. Whole dried pods can be placed near one's bed for protection, purification, and prevention of nightmares. The powdered bark of the tree is used in incense in Japanese temples, and the trees are planted around temples and on graves for consecration and protection. The fruit has been used in Oriental medicine for over 3,000 years for its stimulating effect on digestion.

Star anise is considerably less expensive to produce commercially than anise and has gradually displaced P. anisum in Western commercial food and perfume markets, often substituted for anise or licorice in candies and oral hygiene products and becoming the predominant scent of this type in perfume products, by volume, by the 1990s.

The clear to pale yellow oil is steam-distilled from fresh or partly-dried pods. In perfumery, the fragrance of star anise oil is more pungent than anise and has strong licorice tones, but is also soft, powdery, and floral. Its spiciness performs well with cardamom, bay, coriander, lavender, neroli, orange, petitgrain, mandarin, cedarwood, and rosewood.

About 90% of the world's star anise crop has been used for extraction of shikimic acid, a chemical intermediate used in the synthesis of the antiviral drug oseltamivir (Tamiflu), and Tamiflu shortages caused by the 2009 swine flu pandemic caused large star anise price increases. But by 2018, fermentation of E. coli had become the predominant manufacturing process to produce shikimic acid.

Japanese star anise (Illicium anisatum), a similar tree, is highly toxic and has caused severe neurological and inflammatory effects when used through accidental or economically motivated adulteration of star anise tea products. However, it has been used safely in Japan when burned as incense.

Masculine star anise perfume products:
Annick Goutal Mandragore
Cardin Signe Cardin for Him
Cardin Revelation
Armani Code
Armani Attitude Extreme
Azzaro Cockpit
Cerruti pour Home
Perry Ellis Male 2004
Ferrari Black Signature
l'Instant de Guerlain pour Homme Eau Extreme
Yves St. Laurent Opium pour Homme
Yves St. Laurent Rive Gauche pour Homme
Yves St. Lauarent l'Homme Libre
Paco Rabanne Ultraviolet Fluoressence for Men
l'Occitane en Provence Eau du Badian
Zileri Concept No. 18
Oriflame Embrace Him
Moschino Forever
Castelbajac Homme
Aquolina Blue Sugar
Dior Sauvage
Trumper Paisley



Licorice root (Glycyrrhiza glabra), in its true form, is intensely sweet (13 times sweeter than white sugar). But the extracted anethole itself produces the herbal, peppery, almost bitter taste associated with licorice candy. The roots are wrinkled and fibrous and have a sweet, earthy odor. They are boiled to extract the flavor and fragrance, and the water then is evaporated to produce a thick liquid extract or even a solid block that can be cut into bars and wrapped in laurel leaves.
k9lfKuX.jpg
taSMncL.jpg


Licorice has been found in the Egyptian pyramids. Romans had it in Britain, and it has been found along Hadrian's Wall. Hannibal gave it to his elephants to chew as they crossed the Alps, and Bedouins are said to give their camels licorice to quench their thirst. Hindus have believed for centuries that it increased sexual vigor when prepared as a beverage with milk and sugar. And the Chinese, who have used it for 3,000 years, thought that eating the root gave them strength and endurance, and they prepared tea from it as a medicine. It has been employed as a sweetener and a flavoring, since it can mask unpleasant tastes and odors. In the 19th century it was introduced commercially as Sen Sen, a candy that was called a 'breath perfume' and was thought to help ease coughs and sore throats. The root also has been used in breweries to add flavor, dark color, and foam stability to dark beers. Similarly, it adds flavor to oral hygiene products, and it has been used in fire extinguishers to assist with the foaming action.

In perfumery, the distinction between licorice and anise often blurs, but classically licorice is seen as a slightly darker and warmer scent. If a perfume has the word 'reglisse' in the name, it most likely features licorice prominently. Licorice works well in fragrance preparations with leather, woods, and lavender and other herbs. Lolita Lempicka by Annick Menardo first brought licorice notes to mainstream perfumery with the eponymous perfume that combined it with violet, cherry, almond, and heliotrope. Lolita Lempicka au Masculin takes more of a fougère structure, with lavender and coumarin.

Masculine perfume products with licorice:
Joop Go Electric Heat
Oriflame Free Motion
Masaki Matsushima Very Male
Lolita Lempicka au Masculin
Givenchy Play in the City for Him
Carolina Herrera 212 Men Ice
Nina Ricci Memoire d'Homme
Alviero Martini GeoBlack Man
Azzaro Decibel
l'Atelier Boheme Rhizomes
Cereus No. 5
Cafe Black Label
Dior Fahrenheit
Verino Pure Man
Lacose Live
 
Fougère

I noticed recently that some of my fougère shaving products were getting low or close to being finished, and that got me thinking about this family of fragrances, their character and variations, and their history. So I researched them a bit.

The name for this type of scent comes from the French word for fern, and the profile typically has a primary note reminiscent of a shadowy rainforest's flora. The name originated with Houbigant Parfum's Fougère Royale, created in 1882 by owner and perfumer Paul Parquet. Houbigant is an old and renowned French perfume house, established in 1775 and famous for creating fragrances for members of royal families; it was said to be a favorite of Queen Marie Antoinette. The association of the fougère scent with ferns often has been called an imaginary one, since fern plants supposedly have no scent. However, a few people have claimed that damp ferns actually do have a smell somewhat like loamy earth and hay and suggesting the presence of pine balsam and other wet foliage, and that the smell varies depending upon the species of fern.

Fougère Royale was the first fragrance that included a synthetic component, the chemical compound coumarin, which was created from coal tar. Coumarin had been discovered in 1868 by the English chemist Henry Perkion. Blended with lavender and oakmoss, it creates the woody base for fougère fragrances. Coumarin can be found in nature in some plants such as sweet clover, bison grass, woodruff, lavender, and South American tonka bean. Its name comes from the French word 'coumaru,' which means 'Tonka bean.' Perfumers claim that it is present in concentrations exceeding 1% in about half of the world's fragrances and appears in 90% of them.

Parquet at first devoted the Fougère Royale fragrance to women; but since it subsequently was primarily purchased and used by men, especially the dandies of the time, his classification and marketing of it changed. It had an overall note that captured at the time the imagination of Western Europeans who were in search of pathways for recalling nature in an increasingly urbanized and industrial landscape. Since that time the majority of fragrances in the category have been for men, with the Chypre family its feminine counterpart. Because it included for the first time a synthetic factor, Fougère Royale set a precedent that opened up the world of scents, previously consisting of simple 'natural' products, to the creative imaginations of perfumers. Production of Fougère Royale was stopped in 1950, although unsuccessful attempts to recreate and update it were undertaken in 1959 and 1988. Under the ownership of the Dana Company, Houbigant re-introduced the fragrance in 2010, changed somewhat due to decreased ingredient availability and health regulations.

The fougère family usually is included in the broad green category of scents. These products are usually based for the most part on 'natural themes' that smell like plants, leaves, and grasses. The green factors provide bright, strong accents that can be found as top or middle notes in compositions. Fougère perfumes almost invariably feature lavender as a sweet top note, along with geranium, bergamot (for brightness), oakmoss (for woodiness and further sweetness), and coumarin (for freshness). Although the family has evolved dramatically over the past century, it has maintained its basic accord and multifaceted quality. Modern fougère creations often have various citrus, herbaceous, floral, and animalic notes added. Common additions include vetiver, galbanum, amber, sandalwood, guaiac wood, rosemary, sage, and other herbs. Fougère subclasses, building upon the same basic skeleton, include Citrus, Woody, Leather, Aquatic, Green, Fruity, Spicy, and Aromatic Fougères. Over time fougère fragrances fell out of favor, but more recently they have enjoyed a resurgence in popularity, with modern perfumers adding new twists to the classic combination. Generally they remain herbacious and are characterized by a tobacco-like warmth, a fierce aromatic intensity with an almost 'bitter' character, and a dry, grassy and hay-like drydown. Clean and fresh, they are quite versatile and can be worn on a wide variety of occasions.

Examples of men's fragrances which fall into the fougère class include Brut by Fabergé, Paco Rabanne pour Homme, Azzaro pour Homme, Boss by Hugo Boss, Prada for Men, Eternity for Men by Calvin Klein, Canoe for Men by Dana, Dolce & Gabbana pour Homme, Drakkar Noir by Guy Laroche, Tabac for Men, Michael for Men by Michael Kors, Davidoff Cool Water, Penhaligon's Sartorial, Clubman Pinaud and Special Reserve, Polo Blue and Chaps by Ralph Lauren, and Kouros by Yves Saint Laurent.
 
Metallic

Metallic notes are used in perfume products to suggest metals, especially iron, a cool, clean effect, fresh, sharp, and a bit sterile. They most often are used as subtle nuances, very rarely dominantly.

The source of a smell from an actual metal is found in skin lipids, which are oxidized through the action of oxidoreductases (a group of enzymes which catalyze the transfer of electrons from one molecule to another). In contact with skin, iron cations (Fe2+), along with the enzymes, decompose lipid peroxides, producing intensively smelling substances. For the same reason, blood has a characteristic metallic smell; iron contained in blood hemoglobin causes a similar reaction. (During evolution we developed a sensitivity to this smell; some predators can sense it miles away.) Scientists of Linkoping University in Sweden have identified the key component of the smell of blood, trans-4,5-Epoxy-(E)-2-decenal. Our sensitivity to this compound is extraordinary – it could even be sensed at a dilution of 0.07-0.3 parts per trillion. Similar compounds, trans-4,5-epoxy-(E)-2-octenal, trans-4,5-epoxy-(E)-2-nonenal, and trans-4,5-epoxy-(E)-2-undecenal, have a similar effect on our nasal receptors.

The substances which cause a metallic smell usually are 'bloody aldehydes,' unsaturated and often conjugated, and ketones. One of these, oct-1-en-3-one or amyl vinyl ketone, is most frequently used in the perfume lab. In its pure form, it has an earthy metallic smell with mushroom and vegetable nuances, with a sort of fishy note, similar to the smell sensed during preparation of freshly caught fish. The smell of unsaturated aldehydes is very common in nature. The smell of cilantro, for example, is produced by them. Some insects use similar substances as their protective chemical weapons. For example, the aldehydes (E)-2-Decenal and (E)-2-Octenal have been isolated in stink bug secretions.

In the perfumer's palette, there are a number of materials with a metallic character, depending upon the substnaces with which they are combined. Earthy, animalic, green, marine, and white flower groups especially have a metallic character at times. A metallic nuance is very prominent in rose oxide, a minor component of the well known rose smell. Geranium contains an even larger quantity of rose oxide, and geranium oil smells quite metallic during phases of its evolution on the skin. Some Comme des Garçons preparations, for example, have a high concentration of rose oxide. As a side note, rose oxide also adds a characteristic green-metallic note to the aroma of the white wine Gewürztraminer. And rose oxide has been isolated as a chemical defense in Aromia Moschata, a musk beetle.

Nitriles are another group of substances which smell somewhat metallic. Nitriles are quite stable and inert, and often used as odorants for bleaches and other household cleaning products. Nitriles are sometimes used for adding a specific metallic context to a perfume, such as in several creations by Antoine Lie, a perfumer at Tagkasago.

Some people sense a metallic nuance in lavender. In a classic fougère, a cool lavender often is paired with the metallic nuance of geranium, balanced with the warmth of coumarin and balsamic materials. In more modern fougères, such as Davidoff Cool Water, the metallic context is enhanced by additional dihydromyrcenol and allyl amyl glycolate. Synthetic iris notes are also used frequently to provide metallic tones to perfumes.

Fragrance notes that can produce a metallic tone include: Aldehydes, Amber, Ambergris, Berries, Birch Tar, Carnation, Cedar, Cinnamon, Clary Sage, Coriander, Cumin. Fig, Freesia, Galbanum, Gardenia, Ginger, Hay, Hazlenut, Heliotropin, Honey, Honeysuckle, Hyacinth, Incense, Iris, Jasmine, Lavender, Leather, Lily, Linden Blossom, Mimosa, Mint, Muguet, Musk, Oakmoss, Orange Blossom, Orris, Osmanthus, Oud, Patchouli, Pepper,Pine, Rose, Saffron, Sandalwood, Smoke, Spices, Tea, Tobacco, Tuberose, Vanilla, Vetiver, and Violet Leaf.

Examples of metallic perfume products for men:

Axe Cool Metal
Dina Cosmetics Dagger Metal
Givenchy Pi Metallic Collector
Guerlain Habit de Metal
Comme des Garçons series
Narciso Rodriguez for Him
Hermes Terre d'Hermes Metal Flacon
Varvatos Rock Volume One
Davidoff Cool Water
Karen Low Pure Metal for Men
Monika Klink Metal Mod
Myrurgia Yacht Man Metal
Neotantric Citric Metal Kamasutra
Hugo Boss Red for Men
Paco Rabanne Ultraviolet Liquid Metal for Men
Creed Acier Aluminium, Silver Mountain Water
Remy Marquis RM Metal
Torand Beverly Hills 90210 Metal Jeans Man
Versace Metal Jeans Men
Azzaro Chrome
Yves Saint Laurent Rive Gauche
Lagerfeld Classic
Yardley Gentleman
Penhaligon's Sartorial
Givenchy Pi Metallic Collector
Jacques Bogart Silver Scent
Chanel Egoiste Platinum
Amouage Honour Man
Azzaro Silver Black
 
"Notes" and the Pyramid Scheme

Often seen in a description of a fragrance is a list of "notes" that it contains, frequently arranged in pyramid form with top, middle, and base notes separated into groups. Sometimes a note refers to an actual discrete ingredient such as rose or orange blossom, but other times it is more loosely used to represent an interaction of two or more factors, and “accord” would be more accurate. This pyramid description provides a useful way to envision a fragrance as it would develop after application. Since fragrant materials differ in their volatility, the olfactory impression of the fragrance changes as it dries down on the skin. So theoretically, first one would smell the most volatile notes, such as citrus and fruit; then the florals would be smelled; and finally one would detect the least volatile musks and woods. However, the fragrance pyramid mostly applies to perfumes created between the 1930s and 1970s. The study of different fragrance materials and their classification in terms of volatility was perfected early in that era by the perfumer Jean Carles (1892-1966,) whose own work on some great classics exemplified the classical pyramid structure. These fragrance mixes were built with a very clear three-dimensional quality, with the characters of the top, middle, and base being very distinct. Earlier 20th century fragrances, prior to the 1930s, were not formulated as a classical pyramid, but were much closer in character to the fragrance blends of the 19th century, based on the use of natural essences fixed in place by oriental components (balsamic, exotic aromas) and animalic materials (such as civet, ambergris, and castoreum, unpleasant in large amounts but providing depth and sensuality in lower concentrations).

A perfume is a unique mixture of scented materials with its own distinctive character that is more than just a sum of its parts, and the list of notes tells only a part of the story. In addition, fragrances made today no longer adhere strictly to the three-tiered structure. Over the past 40 years, there has been a marked shift away from the fragrance pyramid concept and into new structures that give much different impressions. To use a musical metaphor, the theme is there in many modern fragrances from the first movement, and even if you hear a violin at one point and a flute later, the character remains unchanged throughout. Some fragrances might even lack altogether a top note in the classical pyramid sense, with the initial impression being set by a small amount of extremely strong materials that would more typically be considered as middle or base notes. In contrast to more subtle classical mixtures, modern fragrances do not hide or bury their themes, and they frequently represent open character declarations, with side scent notes providing harmonious texture details to the overall "melody." Modern fragrance structures are not necessarily simple, as the creative layering of accords can result in fragrances of remarkable complexity.

Finally, the sheer number of new fragrance launches means that consumers, face with numerous choices, often make decisions based on their first impressions. Fragrance compositions, as well as their descriptions, often are driven by sales considerations, and the pyramid list of notes is sometimes just a marketing concept, crafted for different emphases. For example, some brands might try to avoid listing a perceived heavier component such as musk in their fragrance notes even though their products contain it. Other brands, on the other hand, may want to emphasize and promote notes that they feel are most suited to their concepts: if a fragrance is launched as the new floral to fill a gap in the brand’s product portfolio, its floral notes will be highlighted in the description, even if they play a relatively minor role in the total fragrance composition. Moreover, a descriptor may be inaccurate. A term such as jasmine may not even mean anything that smells truly like a jasmine flower — it may be a luminous hedione note (an ester resembling natural jasmine but actually closer to lily of the valley in character) or a raw material representing just one facet of the flower. And those "woods" anchoring the bottom of a fragrance pyramid scheme are likely to be Cashmeran, a synthesized chemical with a complex woody-musky note.

While the fragrance notes are helpful, they should be seen only as a rough guide. However, since they provide an easily shared and communicated structure, they are commonly used and can be a basis for comparison.

In the pyramid scheme, the olfactory impression of a fragrance is described in a musical metaphor as having three sets of notes, which together constitute the harmonious overall scent accord. Notes are descriptors of individual scents or scent interactions that can be perceived upon the application of a perfume. They are separated into three classes: top/head notes, middle/heart notes, and base/back notes, which denote scents grouped with respect to their varying times for being perceived after application of the fragrance on the skin. Generally, then, this is a volatility grouping, based on a scheme using their respective evaporation coefficients from 1 to 100:

Top Notes: 1 to 14 (most volatile)
Middle Notes: 15 to 60
Base Notes: 61 to 100 (least volatile)

Top or head notes are perceived immediately upon application of a perfume. The compounds that contribute to top notes are strong in scent, are very volatile, and evaporate quickly. They form a person's initial impression of a fragrance and thus are very important in the selling of the product. The scents of this note class are often described with terms such as "fresh," "assertive" or "sharp." Citrus scents and ginger are common top notes.

Heart or middle notes are the second, middle phase of a perfume's fragrance evaporation, occurring after the top note fades away. The heart stage is mainly produced by floral, spicy or woody components, and as its name indicates, it usually represents the heart or dominant tone of the perfume and enables its classification into a fragrance family. Common heart notes are jasmine, rose, lavender, and various herbs. These notes appear anywhere from 2 minutes to an hour after fragrance application, but most commonly require around 10 to 20 minutes to develop fully on the skin. The scent of middle note compounds is usually perceived as mellow and "rounded." These notes often mask initially the unpleasant impression of the later base notes, which become more pleasant over time.

The back or base notes (or fond, meaning "bottom" in French) are the third and last phase of a perfume's life on the skin, the underlying tones that bring solidity and depth. This phase contains the lasting ingredients, such as woods, resins, and animal and crystalline substances. These are the heaviest ingredients, molecularly, in a perfume formula. In heavy fragrances (chypre and Oriental types, for instance), the back note group is so strongly accented that it is even discernible as a first impression along with the top or head notes. Base notes sometimes impart their own scent; they help to fix other notes in the perfume formula (i.e. make them last longer); and they enhance or boost other, lighter ingredients. Base notes generally appear most prominently close to the departure of the middle notes, and the base and middle notes together frequently define the main theme of a perfume and its lasting impression on the person smelling it. Consisting of large, heavy molecules that evaporate slowly, compounds of this class of scents are typically rich and "deep" and are usually not perceived until at least 30 minutes after the application of the perfume or during the period of perfume dry-down.

As noted in terms of the effect of base notes, it should be kept in mind that the presence of one note may alter the perception of another - for instance, the presence of certain base or heart notes will alter the scent perceived when the top notes are strongest, and likewise the detected scent of base notes in the dry-down will often be altered depending on the fragrance materials and lingering smells of the heart notes.
 
Essential Oil vs. Fragrance Oil

There can be some confusion about the differences between essential oils (EOs) and fragrance oils (FOs) used in perfume products. Most simply, EOs are extracts derived from plants and FOs are synthetic chemical scent compounds. Generally, EOs can be used for scenting, flavoring, or healing applications (in aromatherapy), while FOs are used in foods or candies for flavor but are mainly used for their scent qualities. FOs are ubiquitous in commercial cleaning products, room air fresheners, personal care products (including hand sanitizers, toilet paper, and tampons), laundry soap, baby diapers, stationary, foods and drinks, toys, and other products. Hand, face, and body soaps and other skin care products, as well as candles, even items labeled 'natural,' often contain FOs. It is common for a label to say 'contains essential oils' when the item also contains fragrance oils, which contributes to misunderstanding.

Essential Oil (EO)

Essential oils are concentrated hydrophobic liquids containing naturally occurring volatile (easily evaporated at room temperature) chemical compounds. They are derived from different parts of a plant, including blossoms, fruits, seeds, leaves, roots, stems, barks, woods, or resins. Generally they are not manipulated significantly, processed, or diluted with a carrier oil or other additives (except for dilution in aromatherapy) before use. They can also be known as volatile oils, ethereal oils, or aetherolea, or simply as the oil of the plant from which they were extracted, such as 'oil of clove.' An EO is considered essential in the sense that it contains the 'essence' of a plant's fragrance. The term essential does not mean indispensable to a living organism the way it does with the terms essential amino acid or essential fatty acid.

Some plants, like bitter orange, can be sources for several different types of EO.

EOs generally are extracted by distillation, usually with steam and most often single-process rather than fractional; but they also can be obtained by cold pressure expression, solvent extraction, sfumatura (mechanical folding), absolute oil extraction, and wax embedding. Most of the common oils, such as lavender, peppermint, tea tree, patchouli, and eucalyptus, are steam-distilled in an alembic. In single-process distillation, water is heated and its steam passes through the plant material and vaporizes the volatile compounds. The vapor flows through a coil, where it condenses back to liquid that is then collected in a receiving vessel. The re-condensed water is called a hydrosol, hydrolat, herbal distillate, or plant water essence. Those marketed as hydrosols include rose water, lemon balm, clary sage, and orange blossom water.

Most citrus peel oils are expressed or cold-pressed mechanically, similar to olive oil extraction, and due to the relatively large quantities of oil in citrus peel and the low cost to grow and harvest the raw materials, citrus oils are cheaper than most other EOs. They are obtained for the most part as byproducts of the citrus fruit industry. Historically, prior to the discovery of the distillation process, all EOs were extracted by pressing.

Most flowers contain too little volatile oil to undergo expression, but their chemical components are too delicate and easily denatured by the high heat of steam distillation. Instead, they are extracted with a solvent such as hexane or supercritical carbon dioxide (a fluid state of CO2 in which it is held at or above its critical temperature and critical pressure, expanding to fill its container like a gas but with a density like that of a liquid). Extracts from hexane and other hydrophobic solvents are called concretes. While highly fragrant, they are a mixture of essential oil, waxes, resins, and other oil-soluble plant materials. Usually the concrete is then chilled in an alcohol solution to cause the waxes and other lipids to precipitate out. The precipitate is filtered, and the ethanol is removed by evaporation and/or vacuum purging, leaving behind the 'absolute.'

Use of supercritical carbon dioxide as a solvent in fluid extraction avoids the presence of petrochemical residues in the product and the loss of some perfume 'top notes' that occur when steam distillation is used. The supercritical CO2 process extracts both the waxes and the essential oils, which are subsequently processed with liquid CO2 by temperature lowering under pressure. The cooling separates the waxes from the oils, and the lower temperature prevents decomposition of compounds. When the extraction is complete, pressure is reduced to ambient levels and the carbon dioxide reverts to gas, leaving no residue.

EOs are used for fragrance in perfumes, cosmetics, incense, soaps, and cleaning products, and for flavoring foods and drinks. In aromatherapy, frequently considered a form of alternative medicine and more popular again in recent decades after a period of decline, pure EOs that enter the body through the skin (via massage when mixed with a carrier oil such as jojoba, coconut, wheat germ, olive, or avocado; or via bathwater) or the nose (via volatile diffuser, burning candle or incense, or humidifier) are used to influence physical, emotional, and mental health. They are reputed to enhance mood, relieve inflammation or symptoms such as pain or fatigue, and kill body germs. However, while research continues, there is not yet much clinical evidence that they can effectively treat any specific condition.

Each EO component can have both positive and negative effects either topically or internally, depending upon its particular properties and concentration, and can be toxic. One well-known example is cinnamon oil, touted for its antiseptic and astringent capabilities yet highly irritating to some skin. Children may be particularly susceptible to the toxic effects of improper EO use, especially at high concentrations, and when the oils are swallowed. EOs also can cause immunologically-mediated allergic reactions in those allergic to the source material.

The quality of EOs can vary widely, with the quality of a given batch of oil being influenced by how the plants are grown (including use of insecticides and other chemicals), possible processing (including dilution or adulteration during extraction), packaging and handling (with exposures to heat, light, or oxygen), and storage. The usual shelf life of an EO is around 1-2 years after opening.

EOs have been used in folk medicine for centuries, with the earliest recorded mention of the techniques for EO production believed to be that of an al-Andalusian (Muslim Spain) physician-chemist, Ibn al-Baitar (1188-1248). Modern academic studies typically discuss the specific chemical compounds of which EOs are composed, such as referring to methyl salicylate rather than 'oil of wintergreen.' Medical uses of EOs, for treatment of cancers in particular, are now subject to regulation in most countries.

Finally, some EOs can act as natural pesticides against insects and arthropods, repelling, inhibiting growth or reproduction, or causing animal death at concentrations that are nontoxic for mammals. Some that have been investigated for this use include rose, lemon grass, lavender, thyme peppermint, and eucalyptus. They have been used commercially to a limited extent, and their popularity is increasing among organic farmers and environmentally conscious consumers.

EOs are typically more expensive than FOs because it is costly to plant, grow, harvest, and process the plants, although this varies with the type of oil, the season, and the availability of the product. Steam distillation, expression, and solvent extraction can be complicated and expensive, and a very large amount of plant material is required to produce even a small quantity of essential oil. For example, around 1000 rose petals are needed to make just one drop of rose EO. Citrus EOs, on the other hand, are normally cheaper because they are easier to extract. Each particular EO is comprised of between 50 and 500 different naturally occurring chemicals, which are quite difficult to reproduce synthetically and some of which have not even been identified chemically yet. In addition, depending on the season, climate, and growing conditions of a plant, the biochemical makeup - and thus the scent and/or taste - of a particular EO will vary, and it is difficult for manufacturers and crafters to keep their finished products consistent.

Commonly used EOs in perfumery include lavender, chamomile, rose, hyssop, clary sage, rosemary, ylang-ylang, myrrh, vetiver, frankincense, grapefruit, peppermint, spearmint, wintergreen, basil, orange, melaleuca (tea tree), lemon , cassia, and oregano.

Fragrance Oil (FO)

Fragrance oils are artificially manufactured compounds (or natural EOs that have been diluted with a carrier such as propylene glycol, vegetable oil, or mineral oil) created in a laboratory and specifically designed to mimic naturally occurring scents or to invoke a feeling (such as 'spring rain') or emotion. They are also known as aroma oils, aromatic oils, or flavor oils.

The range of FO scents is enormous, and generally they are relatively inexpensive. They are used primarily in the manufacture of perfumes, cosmetics, and flavorings. For reasons of animal cruelty or because of animal population decreases and endangerment, historically popular perfume fragrance notes such as civet, musk, ambergris and castoreum, derived from animals through processes that typically mistreat or kill the animals that create the scent sources, now have been replaced in large part by synthetic versions or products naturally derived from plants producing similar fragrances.

FOs seem to be problematic more often than EOs in personal care products because they can be drying and more irritating to the skin in concentrations commonly used, and they are thought to be capable of causing many other potentially serious health problems. They often are less desirable than plant-derived EOs for allergic or otherwise sensitive people, commonly causing headaches, dizziness, rashes, coughing, nausea and vomiting, and skin irritation. In official terms of being health hazards, a synthetic version of the same chemical compound as in a natural EO is usually deemed comparable. Recent studies of FOs have suggested 'possible mutagenic and genotoxic effects' and hormone disruptions that are linked to abnormal cell reproduction and tumor growth.

'Natural' vs. Synthetic Fragrance Oils

There is a difference between 'natural' and totally synthetic types of FOs. 'Natural' FOs are made in a laboratory but are created by isolating aromatic components from a naturally occurring complex complete scent. There is debate about whether they can be considered truly natural, since they are still created by human science although derived from a natural source. Totally synthetic FOs are created with chemical compounds that do not exist in nature, often composed of petroleum by-products, which makes them cheap and versatile. Many commercial scent products are made with synthetic fragrances because they retain their aromas for longer periods of time than natural oils. Manufacturers sometimes will market their FOs with misleading names such as 'pikake oil' or 'plumeria oil,' which actually are simply synthetic oils infused with a small amount of extract from the actual flowers. This is true especially with floral scents like cherry blossom or freesia, fruit scents like peach, watermelon, or banana, and scents with names that sound 'natural' such as 'white rain.'

Commonly used fragrance oils in perfumery include ylang-ylang, vanilla, sandalwood, cedarwood, mandarin orange, cinnamon, lemongrass, rosehip, and peppermint.

Mixing Essential Oils and Fragrance Oils

Generally EOs and FOs mix well if you wish to combine them. Rather than shaking the mixture, the bottle should be warmed between the hands and then gently rolled on a table or tipped upside down a few times. Any mixture should be left in a cool, shaded area for a week for all the initial components to blend well before it is used or tweaked again.
 
Headspace Technology

Headspace technology is a method pioneered in the 1970s and 1980s of "capturing" scent molecules and reconstructing their smell for perfumes. A bell-jar-like apparatus is placed over the scented object and the aromatic compound molecules, such as fatty acid derivatives, benzenoids, and isoprenoids, are extracted and saved.

cDwMeCs.jpg
h4BILHQ.png


Once they’re analyzed, a synthetic version can be created. This is how fragrances that are hard to distill or do not lend themselves well to other extraction methods, like gardenia, rose, or lily of the valley, and notes like dirt, such as that in Demeter’s Dirt perfume, are created. The various perfume manufacturers have their own fragrance capture systems based on this technology, examples being ScentTrek (Givaudan), Aromascope (Takasago), and NaturePrint (Firmenich). Similar techniques also have been used to analyze and recreate the interesting scents of particular locations and environments such as tea shops, classrooms, and sawmills. Headspace technology extends the perfumers' palette, even providing them with new and unique scent "profiles" from nature, such as the mineral-filled smell of freshly rain-soaked cobblestones, pure air in the high mountains, washed laundry drying in the wind, the odor of hot dust from a lightbulb, or burned rubber (for the race car enthusiast).

The headspace equipment involves a hollow dome or sphere-like object, which forms an airtight seal over the target object. Inert gases are passed into the space, or a vacuum is created, so that the odor compounds are removed from the headspace. The compounds are then captured using a variety of techniques, including cold surfaces, solvent traps, and adsorbent materials. The sample is then analyzed with gas chromatography, mass spectrometry, carbon-13 nuclear magnetic resonance spectroscopy.

One of the early pioneers of this technology is Roman Kaiser, a Swiss fragrance chemist. Since 1968, Kaiser has been working at Givaudan, in Dübendorf near Zürich, the world's largest flavor and fragrance company. His main research activity centers around analysis and reconstitution of natural scents for use in perfumery, and he been using headspace technology for this purpose since 1975. His recent work has been focused on the plants of the canopy and understory layers of tropical rainforests, allowing reconstitution of scents of endangered plant species there.

hkPM7VT.jpg


There is a common misconception that natural perfumes are safer than and superior to synthetic aromas. But synthetic chemicals have been used in perfumery for almost a century without consumers being able to detect the differences. In fact, synthetic chemicals are often less volatile, and more stable, than natural chemicals whose smell changes over time. And certain plants are so rare that it is prohibitively costly for companies to harvest them for their smell. In addition, a synthetic copy of a scent often can be less complex and thus easier to use in mixes than the naturally occurring compound. And finally, over-harvesting of perfume plant sources and environmental care are becoming increasing concerns and have an effect on consumer demand and manufacturing processes.

In the 1971 cult classic movie "Harold and Maude," the eccentric octogenarian character (played by Ruth Gordon) takes the young, death-obsessed character Harold (Bud Cort) back to her house and shows him her "odorifics" machine, a kind of recorder of smells. Says Maude, "Then I became infatuated with these, my odorifics. Give the nose a treat, I thought, a kind of olfactory bandwidth. So I began first with the easiest: roast beef, old books, mown grass. And Mexican farmyard. Here's one you'll like, Snowfall on 42nd Street." Maude gives Harold a face-mask attached to a tube that runs from the machine and provides him with the captured smells: subway, perfume, cigarettes, and snow. A precursor of headspace technology!

iWi8Kix.jpg
CaHVAwV.jpg
 
Great write-up! I always wondered how these scents were captured and analyzed- especially given that some if the naturals would be so prohibitive to grow in such mass quantities
 
Back
Top