La Roche-Posay Hyalu B5 Hyaluronic Acid Serum is an intensely hydrating skincare solution that has been clinically proven to replump and repair the appearance of skin in just one day. Specially formulated to treat dehydrated skin showing signs of ageing, including loss of volume and fine lines, the anti-wrinkle treatment utilises two different sized molecules of Hyaluronic Acid to infuse skin with moisture, the larger molecule works on the surface while the smaller molecule penetrates deeper to plump skin with moisture and fill out the appearance of fine lines and wrinkles. Helping skin recover youthful bounce and suppleness, the La Roche-Posay serum delivers reparative and replumping properties. The minimalist formulation also contains Vitamin B5 and Madecassoside, which work in synergy to improve skin's natural repairing process while encouraging collagen. After use, the skin feels intensely hydrated with a fresher, smoother and firmer feel.