This shampoo for long hair helps to thicken your hair whilst making it visibly healthier and stronger looking. When used with the pro longer conditioner for long hair, there is a 95% hair breakage reduction and split ends are reduced visibly by 17%. The filler a 100 technology used is patented to l'oreal professionnel, and it works by penetrating the fibre core to plump and thicken the hair from the inside. Amino acids in the formula work to strengthen the hair from the outside. The formula works on thin ends, or areas where help is most needed. Results 94% hair breakage reduction 17% visible split ends reduction 5x shinier hair to use shampoo twice first to cleanse, second to treat rinse out.