Redken's Extreme Length Shampoo with biotin strengthens damaged hair and helps hair to grow longer and stronger. Features include:
- 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