Redken Extreme Length Biotin Shampoo 300ml
- Amazon now offers Redken Long Hair Shampoo for strengthening damaged hair and preventing breakage, now $36.09 (list price $56.00), requires Subscribe & Save checkout.
- Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: My hair always broke off at shoulder length, but after switching to this shampoo, breakage has significantly decreased. The biotin formula really strengthens each strand, and my hair doesn't feel dry after washing—it's soft to the touch. With long-term use, split ends have also reduced. Perfect for anyone wanting to grow long hair while avoiding damage.