Hyaluronic acid is a kind of polysaccharide substance, more detailed classification, belongs to mucopolysaccharide. It is a high molecular polymer composed of D-glucuronic acid and N-acetylglucosamine groups arranged repeatedly. The more repeating groups, the greater the molecular weight of the hyaluronic acid.
Hyaluronic Acid Structure
Hyaluronic Acid For Skin
Hyaluronic acid has the highest moisture absorption in low relative humidity (33%) and the lowest in high relative humidity (75%). This unique property is adapted to the skin's moisturizing effect requirements under different seasons and different environmental humidity.
Relatively small molecular weight hyaluronic acid can penetrate into the skin epidermis, promote the supply of nutrients and waste excretion of the skin, so as to prevent skin aging, play a role in beauty and beauty.
By promoting the proliferation and differentiation of epidermal cells and scavenging oxygen free radicals, hyaluronic acid can promote the regeneration of injured parts such as skin caused by sunburn or moxibustion.
Hyaluronic acid is a macromolecular polymer with strong lubricity and film-forming properties. Skin care products containing hyaluronic acid have obvious lubrication and good hand feeling when applied to the skin. A layer of richness will gradually form in the stratum corneum Water-containing film, while transporting water inward and outward. Therefore, when the environment is dry, it is necessary to rely on the sealant to reduce the evaporation of water to the outside in order to maintain moisture.
Hyaluronic acid has a high viscosity in aqueous solution, and 1% of its aqueous solution is gelatinous. It can play a role in thickening and stabilizing when added to cosmetics.
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