Best shampoo & conditioner for hair growth and strength. Salon expertise meets science in our innovative and dermatologically tested formulas. Laboratory proven to strengthen hair strands, reduce hair breakage and promote new hair growth from the very first wash. Benefits: * Reduces hair breakage * Strengthens strands * Encourages hair growth STRENGTHENING SHAMPOO: Our award-winning Strengthening Shampoo is dermatologically tested and laboratory proven to leave hair 68% stronger after just one use*. Successfully targeting the three main factors responsible for hair breakage and hair loss this revolutionary formula delivers stronger, healthier hair. Reduces hair breakage, strengthen hair strands, and promote new hair growth with every wash. STRENGTHENING CONDITIONER: Designed to perfectly complement our Strengthening Shampoo, this dermatologically tested, nourishing conditioner promotes new hair growth, reduces breakage, and strengthens hair strands with every wash. Enjoy 68% stronger h