Looking to achieve long, luscious, and strong hair? Redken's innovative Extreme Length Conditioner is a strengthening product infused with biotin to repair damaged hair enabling it to grow longer and stronger, through the prevention of hair breakage. Redken's Extreme Length Conditioner is best used as a complete system which consists of a Lengthening Shampoo, Conditioner, and Leave-In Treatment. Through using this innovative system whose technology is built on Biotin, Castor Oil (only found in the conditioner), and Soy Protein (only found in the Leave-In Treatment) in order to maximize hair length all while reducing breakage.