Hyaluronic acid is the molecule of youth, it stimulates the formation of collagen and connective tissue, ensures optimal skin hydration, gives the skin tone, softness, elasticity and resistance.By retaining and absorbing moisture, hyaluronic acid works on two skin levels: in depth it returns volume to the skin making it plumper and more filled while the skin’s surface layer is softer and more elastic. The result is a skin with a healthier, younger and more compact appearance.It also stimulates the fibroblasts to increase the production of collagen which, together with elastin, is one of the fundamental proteins for the skin structure.