I recently got my hair colored and I want it to stay that way. A friend of mine had her colored over a year back and she is getting her original hair color back now, and the color she wanted is running off. What are the reasons of this happening? I found out the names of a couple of good shampoos for color treated hair. I would name a few and would like you tell me which one you think is the best. Out of Redken, Oscar Blandi, Keratin and Frederic Fekkai which one is the best shampoo for color treated hair?