Hyaluronic acid, HA for short, is a natural macromolecular polysaccharide widely distributed in the extracellular matrix and intercellular matrix of animal tissues. It is a natural component of the body. It can be seen in the dermis, epidermis and stratum corneum of human skin. The dermis is thicker, with large extracellular space between cells and more matrix, where HA is mainly found. The epidermis is thinner, with cells arranged closely, where HA is less. Most HA in commercial products is in the form of sodium salt, which is called sodium hyaluronate.
The reason why infants and young children have soft and elastic skin is that the high content of HA can better maintain moisture and nourish the skin. However, with age, the content of HA in human skin gradually decreases, the skin’s water retention function decreases, elasticity is lost, and wrinkles and other signs of aging appear.
However, after HA was discovered, this magical ingredient known as the “Key to the fountain of youth” was widely used in cosmetics as an ideal natural moisturizing factor to make products suitable for different skin types, climates, and environments. High molecule weight sodium hyaluronate can form a breathable film on the surface of the skin, help the skin lock in moisture, and block the invasion of foreign bacteria, dust, and ultraviolet rays to protect the skin from damage. Low molecule weight sodium hyaluronate can quickly penetrate the dermis, slightly dilate capillaries, promote blood circulation, improve metabolism, and promote skin cell nutrient absorption. It has the functions of wrinkle removal, enhancing skin elasticity, and delaying skin aging.
Product application range:
Mainly used in creams, lotions, toners, essences, gels, facial masks, cleansers, shower gels, shampoos, conditioners, etc. The effect is related to the molecular weight of the product. Among them, high molecules show good lubricity and moisturizing properties, and low molecules show good transdermal absorption and deep moisturizing effects.