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.
- 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
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