Hyaluronic acid, colorless and odorless, is a transparent gel with high viscoelasticity, water retention and lubrication. The most powerful part of hyaluronic acid is its ability to absorb water. It can store a lot of water. It is said that it can absorb 1000 times its own weight (1g of hyaluronic acid can absorb 1L of water), and about 60% of our human body is composed of water. Yes, hyaluronic acid is like sponge, it can help the skin retain moisture, moisturize the stratum corneum, and achieve the effect of moisture retention and moisturizing. Because hyaluronic acid itself contains a large number of shuttle and meridian groups, it can combine with a large amount of water to achieve stable water retention, and the intermolecular polymerization of hyaluronic acid itself forms a complex network structure, which makes hyaluronic acid good elasticity, so it can be used as a good skin barrier. In addition, hyaluronic acid itself also has the function of regulating inflammatory factors, promoting cell growth, differentiation, and reconstruction, promoting cell proliferation and differentiation, and scavenging free radicals.
The water content of the surface layer of human skin is about 15-30%. If it is less than 15%, it will cause dryness and peeling; if it is higher than 30%, it will feel sticky. When hyaluronic acid acts on the inside of the skin, it acts like a humidity regulator, helping the skin to maintain moisture between 25-30%, keeping the skin moist, fresh and elastic. At the age of 0-20, the content of hyaluronic acid in the human body is 100%-80%. With age, the hyaluronic acid will gradually decrease; by the age of 60, the content of hyaluronic acid will drop to 25%, which will cause the skin to lose elasticity. Regular supplementation of hyaluronic acid can help the skin retain moisture and maintain skin elasticity and moisture.
Macromolecular hyaluronic acid has the ability to capture a large amount of water, can form a film on the skin surface and reduce water evaporation, so it is often used as skin moisturizing and lubricating effect; small molecule hyaluronic acid easily penetrates skin cells, so it can directly reach the bottom of the skin and replenish lost skin moisture, strengthen the water holding capacity in the stratum corneum, for example, small molecule hyaluronic acid can be used to reduce the fine lines around the eyes.
Although hyaluronic acid is highly stable, it is not easy to cause skin rejection, but depending on the individual's physique, it can sometimes cause skin discomfort. Therefore, it is recommended that friends who want to use hyaluronic acid skin care products can apply it on the inner arm of the arm before using it to test whether the skin has any discomfort.