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.
Adds manageability, smoothness and shine
Formulated with biotin and soy protein to help strengthen 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%
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