This shampoo cleanses, strengthens and restores damaged hair and helps to prevent future hair breakage. Extreme Shampoo is formulated with Redken's Strength Complex which contains Amino Acids and Arginine to strengthen and fortify the hair and Citric Acid to condition and add smoothness. Manage and treat your clients dry, damaged hair like a pro with the complete Extreme hair care system. BENEFITS:Cleanses, strengthens hair and restores shine. Helps fortify weakened areas of the hair.