Hyaluronic acid with medium molecular weight is generally slightly soft and suitable for soft tissue filling and certain filling and wrinkle removal. Such as forehead, temple, mental groove, mountain root, lips, chin, nasolabial groove, etc.
Hyaluronic acid with small molecules is generally used for fine parts carving and wrinkle removal. Non-crosslinked small molecule hyaluronic acid is also used for water injection. For example, we often talk about the position of silkworms, the legal pattern and so on.
Macromolecular hyaluronic acid (molecular weight range 1 800 000 ~ 2 200 000) can form a breathable film on the skin surface, which makes the skin smooth and moist, and can block the invasion of foreign bacteria, dust and ultraviolet rays and protect the skin from infringement.
Medium molecular weight hyaluronic acid (molecular weight range 1 000 000 ~ 1 800 000) can tighten the skin and moisturize for a long time.
Hyaluronic acid (molecular weight range: 400 000 ~ 1 000 000) can penetrate into dermis, and has the functions of slightly dilating capillaries, increasing blood circulation, improving intermediate metabolism and promoting skin nutrient absorption. It has a strong wrinkle removal function, which can increase skin elasticity and delay skin aging.
A good skin care product is measured by three hyaluronic acid components with different molecular weights. Skin care products with only one molecular weight hyaluronic acid component have limited effect, and cannot exert the best skin care effect of hyaluronic acid.
Extended data:
Hyaluronic acid is a disaccharide unit composed of D- glucuronic acid and N- acetylglucosamine, also known as uronic acid and hyaluronic acid. Its basic structure is a large polysaccharide composed of two disaccharide units, D- glucuronic acid and N- acetylglucosamine.
Unlike other mucopolysaccharides, it does not contain sulfur. Hyaluronic acid molecules can carry more than 500 times of water, which is recognized as the best moisturizing ingredient today and widely used in skin care products and cosmetics.
References:
Baidu encyclopedia-hyaluronic acid