The Filler A-100 technology used is patented to L'Oréal Professionnel, and it works by penetrating the fiber core to plump and thicken the hair from the inside. The formula works on thin ends, or areas where help is most needed.
For a deep condition apply to towel dried hair and leave on for up to 10 minutes then rinse. Use mask after loreal Prolonger shampoo and conditioner for most effect results.