Help restore visibly thinning hair with BosRevive 30-Day Kit designed for Color Treated Hair featuring a simple, 3-step system including a Nourishing Shampoo, Volumizing Conditioner and Leave-In Thickening Treatment. Sulfate-free BosRevive Nourishing Shampoo removes build-up, such as DHT, from the scalp surface, while cleansing hair of product build up.