Pro Longer Shampoo for Long Hair helps thicken the look of your long hair while making it appear noticeably healthier and stronger. When used with Pro Longer Conditioner for Long Hair, there is less hair breakage*. The A-100 Filler technology used is patented by L'Oréal Professionnel, and works by penetrating the fiber core to fill the hair and increase its density. This formula works on thin ends or areas that need help. ♥ *Practical test using shampoo and conditioner
