Redken Extreme Length Fortifying Shampoo (300ml) is a hair-strengthening shampoo that helps fortify damaged hair and effectively reduce split ends. This innovative formula contains a 1% Biotin Length Care Complex, a key active ingredient which strengthens hair to help it grow longer and appear healthier. The hair strengthening shampoo has been proven to reduce hair breakage and can help hair grow up to six inches longer. It is suitable for all hair types, but is especially effective for treating fragile, damaged hair that is prone to split ends and breaking. The shampoo gently cleanses the hair and encourages strong hair growth. Directions of use: Apply to wet hair, lather and rinse. Use as a complete system with Extreme Length Conditioner and Leave-In Treatment.