Redken Extreme lenghts leave-in treatment

Leave-in biotin treatment strengthens damaged hair, helps it grow stronger and prevents breakage. Benefits: Reduces breakage by 81% when used as a complete system with Redken Extreme Length Shampoo and Extreme Length Conditioner Visibly reduces the appearance of split ends by 78% Formulated with biotin and soy protein to help strengthen hair. Adds manageability, softness and shine.