Smoothen and protect your hair with the Redken Extreme Anti-Snap Treatment, a best-selling leave-in treatment that provides 5-in-1 protection for damaged hair and split ends. Using the full system with Extremeu0027s Shampoo, Conditioner and Anti-Snap will help your hair to have up to up to a 73% decrease in breakage and become up to 3x stronger.To use: Apply to fragile or damaged areas of hair, or all over while damp. Do not rinse out. Style as usual. For best results, use Extreme Shampoo and Extreme Conditioner prior to use.