Hyaluronic acid is a disaccharide unit hyaluronic acid composed of D- glucuronic acid and N- acetylglucosamine. Its molecular formula is (c14h21no11) n, 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. In fact, hyaluronic acid also exists in the dermis of human skin, which is responsible for storing water, increasing skin volume, keeping skin full and plump, and making collagen elastic. Hyaluronic acid is also an important part of keeping skin healthy and young. With the growth of age, hyaluronic acid will gradually drain away, making the skin lose its ability to store water, so people's skin color will gradually become dull and relaxed, and form fine lines, and the skin will begin to age.

In fact, hyaluronic acid has the following functions:

The first effect is to make skin smooth and healthy. About half of hyaluronic acid in the body exists in the skin, which combines with water to keep moisture. However, the natural aging process and exposure to solar ultraviolet radiation, smoke and pollution will reduce the hyaluronic acid content in the skin. Daily dosage 120-240 mg can significantly increase skin moisture and relieve skin dryness.

The second function is to accelerate wound healing. Hyaluronic acid also plays a key role in wound healing. It naturally exists in the skin, and when the injury needs to be repaired, the concentration of hyaluronic acid in the injured part will increase. Hyaluronic acid can regulate the level of inflammation, send a signal to the body, and build more blood vessels in the damaged area, thus helping the wound to heal faster.

The third function is to relieve joint pain. Hyaluronic acid also exists in joints, which keeps the space between bones well lubricated. When joints are lubricated, discomfort or pain caused by friction between bones is avoided.

The fourth function is to relieve the symptoms of acid reflux. New research shows that hyaluronic acid supplements may help to relieve acid reflux's symptoms. When acid reflux occurs, the contents in the stomach flow back to the throat, causing pain and damage to the inner wall of esophagus. Hyaluronic acid can help relieve the damaged esophageal lining and speed up the recovery process.