Redken's Extreme Length Shampoo with biotin strengthens damaged hair and helps hair to grow longer and stronger. Extreme Length Shampoo helps prevent breakage to promote your strongest, healthiest hair.

Key Features and Benefits:

-Reduce breakage by 81% when using the full system of Extreme Length Shampoo, Extreme Length Conditioner, and Extreme Length Leave-In Treatment

-Formulated with biotin to help hair grow longer and stronger

-Gently cleanses the hair

-Helps promote strong hair

Apply to wet hair, lather and rinse. Use as a complete system with Extreme Length Conditioner with Biotin and Extreme Length Leave-In Treatment.