Actually, the girl I went to forgot to give it to me after the first time! When I went back for my relaxer before the 2nd Coppola I mentioned that I read somewhere that I was supposed to use a certain shampoo and she apologized profusely, told me I was supposed to use specific shampoo and gave me a bottle be honest, I don't think it REALLY matters...I was using my normal shampoo for 2 1/2 months and my hair was FINE...After 3 months I probably still could have gone longer but I needed to stay on schedule with my relaxer...I think more importantly than the shampoo (and this is just MY opinion) is how often you wash your hair...I wet my hair almost daily and condition it every time I wet it, but I only use shampoo now 2-3 times a week. To be on the safe side, I am going to use the Coppola shampoo exclusively this time and see if I see a difference.