Redken's Extreme Shampoo offers a restorative cleanse for damaged hair. Infused with proteins like soy and arginine, this shampoo fortifies each strand, ensuring hair feels strong and revitalized.Formulated to reduce breakage and split ends, it is ideal for color-treated locks. Amino acids, biotin, and citric acid work together to promote longer, healthier hair, helping it withstand daily wear and tear. Size:33.8oz