Redken Extreme Length Conditioner 1LRedken's Extreme Length Conditioner with biotin strengthens damaged hair and helps hair to grow longer and stronger. Extreme Length Conditioner helps prevent breakage to promote your strongest, healthiest hair. Features: Fortifies and strengthens hair for 81% less breakage* 5x stronger hair Promotes healthy, stronger hair from root to tip Helps prevent splits ends and reduce the look of split ends by 78% Formulated with biotin and castor oil to help