My hair is dyed pink with a long lasting semi permanent veggie dye. This shampoo does contain sulfates and as expected it does fade my color a noticeable amount. I try to only use it a couple times a week while using only conditioner on other days. My hair is very dry from previous bleaching and when I use this shampoo with the color me happy conditioner or other conditioner my hair is very soft. That is mostly because of the conditioner but it is definitely NOT the most drying shampoo I have every used. It's decent and smells nice, but since it contains sulfates I don't really think it should be considered a color saving shampoo.
I used this product a few times because I was out of my usual shampoo and conditioner. I liked the smell, it was very pleasant but as far as using for color treated hair, not so much. It made my hair brittle and frizzy and sucked the moisture out of my hair and it made my color fade with a few shampoo's. Not the best product.