Redken Extreme Length Shampoo is a professional shampoo formulated with Biotin & Redken's Length Care Complex. It promotes hair growth by strengthening damaged hair for it to grow longer and stronger. Professional solution for breakage-prone hair. Gently cleanses, fortifies, and strengthens hair to promote hair growth. Prevents hair breakage by visibly reducing the appearance of split ends. Ideal for all damaged hair seeking longer and stronger hair. With biotin and Redken's length fortifying complex, helps to fortify and protect lengths. Provides healthier hair to grow from root to tip. Biotin-infused shampoo to strengthen and grow hair longer and stronger. Fortifies, strengthens and supports hair growth. Ideal for weak, fragile, prone hair types looking for length. Cleanses and conditions hair from root to tip. Helps strengthen fragile strands for longer hair. Provides nourishment and conditioning with added manageability. Directions Apply to wet hair, and massage into a lather. Rinse.