Redken's Extreme Shampoo is part of the SMART Haircare family and is designed to strengthen, nourish, and gently cleanse damaged hair. This fortifying, strengthening shampoo will manage and treat your tired hair using our exclusive RCT Protein Complex that treats hair from the inside out with it's new, smart, multi-target delivery system. Dry, dull and damaged hair will thank you as this shampoo strengthens and restores while preventing future breakage for visibly healthier, happier hair.