Redken's Extreme Length Shampoo features Biotin to strengthen damaged hair and help hair grow longer.

Redken Extreme Length Shampoo with Biotin & Redken's Length Care Complex helps strengthen damaged hair to grow longer and stronger. Extreme Length Shampoo helps hair growth by preventing breakage.

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 and Redken Length Care Complex to help hair grow longer and stronger
Gently cleanses the hair
Helps promote strong hair