Redken Extreme Shampoo + Conditioner Duo is engineered to fortify and revitalize damaged hair as part of the SMART Haircare lineup. This duo, featuring Redken's RCT Protein Complex, delivers targeted nourishment from root to tip, addressing dry, dull, and damaged hair. The shampoo cleanses while preserving natural oils, and the conditioner provides deep moisture and strength, reducing breakage and enhancing overall hair health. For the best results, use with the entire Extreme system, including the Anti-Snap treatment.