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Cation hyaluronic acidD- glucose uronic acid and N- acetylglucosamine disaccharide units composed of hyaluronic acid (Hyaluronan), also known as uronic acid, hyaluronic acid, a basic structure is composed of two disaccharide units of glucuronic acid and N- D- A large polysaccharide composed of acetylglucosamine. Unlike other mucopolysaccharides , it does not contain sulfur. Its hyaluronic molecules can carry more than 500 times of water, which is the best moisturizing ingredient recognized today, and is widely used in skin care products and cosmetics.
Hyaluronic acid acts on the skin surface Macromolecular hyaluronic acid (molecular weight range 1 800 000～2200 000) can form a breathable film on the skin surface to make the skin smooth and moist, and can block the invasion of foreign bacteria, dust and ultraviolet rays to protect the skin from infringement; Medium molecular hyaluronic acid (molecular weight range 1 000 000 ~ 1 800 000) can tighten the skin and moisturize for a long time; Small molecule hyaluronic acid (molecular weight range 400 000 ~ 1 000 000) can penetrate into the dermis, with slight expansion of capillaries, increase blood circulation, improve intermediate metabolism, promote skin nutrient absorption, have strong wrinkle-reducing function, can increase skin Resilience, delaying skin aging. A good skin care product is measured by a hyaluronic acid component containing three different molecular weights. A skin care product containing only a single molecular weight hyaluronic acid component has limited effect and does not exert the best skin care effect of hyaluronic acid. Hyaluronic acid can also promote the proliferation and differentiation of epidermal cells , scavenge oxygen free radicals , and prevent and repair skin damage. The aqueous solution of hyaluronic acid has a high viscosity, which can thicken the aqueous phase; the paste which is emulsified with the oil phase is uniform and fine, and has a stable emulsification effect. Hyaluronic acid is a natural moisturizing ingredients best high-end cosmetics, its compatibility is good, can be added to almost any makeup cosmetics, widely used in cream, lotion, lotion , essence , facial cleanser , bath , shampoo In cosmetics such as hair expanders, mousses , lipsticks, etc. , the general addition amount is 0.05-0.5%. |
