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

Benefits:

Reduces breakage by 81% when used as a full system with Redken Extreme Length Shampoo and Extreme Length Conditioner
Visibly reduces the appearance of split ends by 78%
Formulated with biotin and soy protein to help strengthen hair
Adds manageability, smoothness and shine
How to Use:

Apply to clean, damp, towel-dried hair
Leave-in
Style as desired
Use as a