I don't know...I think Lever 2000 is pretty darn slick. True story, I bought a bar of Lever2000 about 20 years ago (it was a premium purchase for my young/poor household) and upon first using it I got some in my eye and it burned like fire. While screaming in pain I tried to wash it from my eye, as the soap washed from my face and body it made the bathtub SO slick my feet lost all traction and I found myself scrambling for a footing. Within seconds I found myself on the bottom of the tub, the bar had slipped from its perch and it was on the floor of the tub too, making it nearly impossible to get up. That was the last time I ever used Lever2000 ...it's slick stuff.