Redken Extreme Length Leave-in w/ Biotin

If breakage is getting in the way of your hair growth goals, it’s time to treat the problem at its source! This must-have leave-in treatment, formulated with biotin and soy protein, helps to strengthen weak, fragile, damaged hair in order to reduce breakage and the appearance of split ends. Bonus? You’ll also get added manageability, smoothness and shine.