Repair and strengthen your dry, damaged hair with Redken Extreme Strength Builder. It’s an intense, silky rich fortifying treatment for your distressed hair. Redken's exclusive Interbond Conditioning System delivers a unique 3D Repair Complex of proteins, ceramide, and lipids to provide internal strength, cuticle reinforcement and protective resurfacing. The condition of your hair will be beautifully enhanced with increased manageability and extra shine thanks to Redken Extreme Strength Builder. After shampooing apply to towel-dried hair. Leave on for 5 minutes (for deeper conditioning leave on for as long as desired). Rinse thoroughly.