L'Oreal Professional Serie Expert Pro Longer Masque helps thicken long hair for visibly healthier and stronger looking lengths. When used with the Pro Longer Shampoo and ends-filler treatment, split ends are reduced visibly by 66%.* The Filler A-100 technology used is patented to L'Oreal Professionnel, and it works by penetrating the fiber 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. Instantly fills ends. Visibly reduces split ends. Thicker and shinier hair.

How to use: After using , apply to towel-dried hair. Leave in 3 to 5 minutes. Rinse thoroughly.

*instrumental test shampoo lotion mask. With the Serie Expert Pro Longer Lengths Renewing mask: 69% less hair fall due to breakage*, 31% split ends reduction* *Instrumental test Pro Longer Lengths Renewing Shampoo Lengths Renewing Mask