Redken Extreme Strengthening Shampoo - 300ml Shampoo for damaged hair that helps reduce breakage and split ends? Redken Extreme Shampoo is a shampoo for damaged hair. This shampoo cleanses, strengthens, and restores damaged hair and prevents 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 dry, damaged hair with the complete Extreme hair care system. BENEFITS Cleanses, strengthens hair and restores shine Helps fortify weakened areas of the hair USE: Apply to wet hair, massage into a lather, rinse. Follow with Conditioner and Anti-Snap Treatment.