Redken's Extreme Shampoo cleanses, strengthens, and restores damaged, brittle hair. This professional product prevents future hair breakage and leaves hair with a soft, shiny finish. This shampoo works for all hair types and all types of damage. Cleanses, strengthens and restores damaged hair and prevents future hair breakage. Strengthens and fortifies hair. Conditions and adds smoothness. Manages and treats dry, damaged hair. 73 percent reduction in breakage. With a system of Extreme Shampoo, Conditioner and Anti-Snap.