I am a hair stylist and I recommend Redken Color Extend Products to all of my clients that have color treated hair.  I like this product because it provides my clients with a product that helps to perserve the color that I just gave them.  It keeps the color from fading and helps to keep your hair shiny, smooth and  vibrant.  There are several things that cause hair color to fade.  The environment for example U.V. rays and mineral enhanced water and damaged hair cuticle can all be factors.  Redken Color Extend Shampoo is gentle on the hair and it protects the hair color from all of the factors...