L'Oréal Paris creates Revitalift Filler [+ Hyaluronic Acid] Serum , ultra-concentrated in pure hyaluronic acid for an anti-aging plumping action. Its formula contains low molecular weight hyaluronic acid for high penetration into the epidermis. Day after day it fills wrinkles and plumps the skin of the face. Its innovative diffuser, designed to preserve the purity of the formula, is able to provide the ideal daily quantity of concentrated serum. Used before the day cream, the serum multiplies its plumping effect.