400ML

Pro Longer Concentrated Treatment for Long Hair helps thicken the appearance of long hair while making it visibly healthier and stronger. When used with Pro Longer Shampoo and Mask for Long Hair, there is a reduction in hair breakage*. Filler A-100 technology is patented by L'Oréal Professionnel and works by penetrating the core of the fiber to plump and thicken hair from the inside out. The formula works on fine ends or areas where help is needed most. *instrumental test, after application of Shampoo + Mask + Concentrate.

DIRECTIONS FOR USE Before Pro Longer Shampoo, apply to damp hair. Leave on for 3 to 5 minutes. Rinse thoroughly. Then shampoo.