Looking to achieve long, luscious, and strong hair? Redken's innovative Extreme Length Shampoo is a strengthening product formulated to repair damaged hair enabling it to grow longer and stronger, through the prevention of hair breakage.  Redken's Extreme Length Shampoo 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.  Benefits: -Reduces breakage by 81% -Gently cleanses  -Helps promotes strong hair How to Use: Apply Extreme Lengths Shampoo to wet hair and massage until later forms. Rinse and follow with Extreme Lengths Conditioner.