Sluff Wipes come in a canister with I THINK 40 in them... they are wipes that are saturated with the stuff. One side is smooth and the other is more abrasive and blue... I give them 2 before each tan and tell them to use the blue side first all over then flip it over and wipe with the white. They come 6 canisters to a box for $36. I just give it to them for free with thier tan and factor the cost into what I also use in solution. I figure that if it helps what I do come out more flawless its worth doing it then not.
http://www.tanextender.com/sluffwipes_canisters.html Thats the retail price.