The stuff works okay, considering it's mostly peroxide and glycerine. The concentration of peroxide (22%) is much higher than you can get in a bottle at the drug store (3%) but I'll bet you could mix those two yourself and possibly do as well. The problem I encountered was with the company's unconscionable practice of assuming you want them to send you three tubes of the crap every three months automatically. I NEVER opted for that and TWICE they did this, despite my having called and instructed them not to. After the second... read full review »