Herbal Essence Dangerously Straight Shampoo?

Is Herbal Essence Dangerously Straight Shampoo safe for color treated hair ? cuz my hair is colored and i dont really like my hair color to fade fast cuz of the shampoo's that i use so please help and please give proof. thanks in advance ! . P.S. i visited the site and i didnt really get it. thanks in advance !