WHAT IT IS BosRevive Nourishing Shampoo for Color-Treated Hair is a gentle rejuvenating sulfate free cleanser that removes toxins from the scalp of visibly thinning hair. WHAT IT DOES Bosley Pro BosRevive Nourishing Shampoo for Color-Treated Hair reconditions the hair while rejuvenating the scalp and extending the longevity of your color.