What is Hyaluronic acid and its function

Hyaluronic acid is an acidic mucopolysaccharide macromolecular substance widely present in human and animal connective tissues. It has important functions in the body, such as maintaining moisture, regulating osmotic pressure, maintaining tissue morphology, lubricating, diffusing barriers, and buffering stress. As age increases, the hyaluronic acid in the human body gradually decreases, leaving only 25% of young skin at the age of 50. Over time, the skin will gradually lose its elasticity and luster, and aging, wrinkles, and sagging will also occur.

 Hyaluronic acid (HA),is a high molecular weight polysaccharide composed of N-acetylglucosamine and D-glucuronic acid disaccharide units that are repeatedly linked. It is the main component of the Intercellular Matrix (ICM) and Extracellular Matrix (ECM), with a molecular weight range of 1kDa~3MDa. The commercially available hyaluronic acid is generally in its sodium salt form, known as sodium hyaluronate.

Whether under low or high humidity conditions, sodium hyaluronate has the same high hygroscopicity, automatically regulating and maintaining skin moisture, and is known as the "Key to the Fountain of Youth". Therefore, it is widely used as an ideal natural moisturizing factor in cosmetics, making products suitable for different skin types, climates, and environments. Large molecule sodium hyaluronate can form a breathable film on the surface of the skin, helping to lock in moisture and block the invasion of foreign bacteria, dust, and ultraviolet rays, protecting the skin from harm. Small molecule sodium hyaluronate can quickly penetrate into the dermis, slightly dilate capillaries, promote blood circulation, improve metabolism, promote nutrient absorption of skin cells, and has the functions of wrinkle reduction, enhancing skin elasticity, and delaying skin aging.