La Roche-Posay Hyalu B5 Serum Anti-wrinkle Concentrate 30 ml. This anti-aging ultra hydrating pure hyaluronic acid face and neck serum leaves skin feeling plump to the touch and helps repair skin by replenishing the natural moisture barrier. This serum combines concentrated pure hyaluronic acid, madecassoside and vitamin B5 for optimal effectiveness while also being suitable for sensitive skin. Pure hyaluronic acid serum hydrates and visibly plumps skin. Rich serum texture leaves skin feeling supple and hydrated to the touch. Hyaluronic Acid (HA): A polysaccharide (carbohydrate polymer) found naturally within the skin. When used in a formula, HA is an effective humectant that can hold a large amount of water to help maintain the skin's moisture. Madecassoside: Derived from the Centella Asiatica plant, madecassoside is known for its nourishing properties. Glycerin: Derived from vegetable sources, it's an excellent humectant. It helps hydrate skin by absorbing water from the surrounding environment. Vitamin B5: Panthenol (provitamin B5) is a key ingredient used in some La Roche-Posay formulas to help the skin feel soothed and moisturized. Dimethicone: A silicone-based polymer used as a skin protectant to help reduce water loss. La Roche-Posay Prebiotic Thermal Water: A soothing water that contains a unique combination of minerals, trace elements, and a high concentration of selenium, a natural antioxidant. Use alone or as an added boost to your favorite moisturizer. La Roche-Posay Hyalu B5 Serum Anti-wrinkle Concentrate 30 ml