The Dior Addict Lip Maximizer Serum lip plumping serum brings the lips intense skincare. Lips seem drenched with water for an immediate and long-term maximum volume effect. Enriched with mallow flower extract and hyaluronic acid, Dior Addict Lip Maximizer Serum has been formulated like a true skincare product, in the form of an emulsion, that intensely hydrates the lips for 24 hours* for volume that seems amplified. This clear lip serum can be worn as a makeup primer, on its own or as a serum at night for deep lip care.