One of Redken's best-selling products, this hair strengthening shampoo cleanses, strengthens and fortifies weakened strands. Additionally, Redken Extreme Shampoo restores and repairs damaged hair while protecting hair's natural shine. Using the full system with Extreme's Shampoo, Conditioner and Anti-Snap will help your hair to have a 73% decrease in breakage and become 3x stronger. Key ingredients: - Coco Betaine: Amphoteric Surfactant for gentle cleansing - Citric Acid, Dimethicone, Ceramide & Conditioning Polymers: For pH balancing, conditioning and smoothness - Amino Acids, Arginine, Vegetable Protein: To help fortify, strengthen and add flexibility