La Roche-Posay Hyalu B5 Serum is a hydrating, anti-aging serum designed to plump and repair the skin, targeting signs of aging like fine lines and loss of volume. It contains hyaluronic acid for hydration and plumping, Vitamin B5 for its repairing and soothing properties, and Madecassoside to improve skin elasticity and firmness. The serum is suitable for all skin types, including sensitive skin, and is clinically proven to improve skin hydration and texture.