Hyaluronic acid is a natural biomolecule widely found in skin and other tissues.It has excellent moisturizing properties.penetrate into the dermis, has strong hydration, promotes telangiectasia, blood microcirculation, and improves Metabolism, promote skin nutrient absorption, have a strong wrinkle-reducing function, can increase skin elasticity, delay skin aging。It can also promote the proliferation and differentiation of epidermal cells, scavenge oxygen free radicals, prevent and repair skin damage.