After using Redken for years, I switched to this one because it seem cheaper and still salon acceptable. For months, my hair has gotten worse and worse since I got this. At first, I thought it was hormones and stress but finally from reading the reviews and recently seeing my hair get finer and finer and untamable, I have deduced it to this shampoo and conditioner. I should have known when after I washed it with the conditioner, it felt nothing like my other salon shampoos. :(( I wish I switched earlier to spare my hair.