Hyaluronic acid, also known as sodium hyaluronate, hyaluronic acid, sodium hyaluronate, vitreous acid, sodium vitrate, English name: Hyaluronic acid, abbreviation: HA. So what exactly is hyaluronic acid? Definition: Hyaluronic acid is a linear polysaccharide composed of N-acetyl glucosamine and gluconic acid disaccharide units, with large molecular weight and certain viscoelastic qualities. Hyaluronic acid is widely distributed in all parts of the body, and the skin also contains a large amount of hyaluronic acid. Sources: microbial fermentation, animal tissue extraction (bovine eyeball, chicken crown, etc.), chemical synthesis Animal sources: purified to get refined hyaluronic acid, this method has a very low extraction rate of only about 1%, the separation process is complicated, resulting in the expensive price of hyaluronic acid. Chemical synthesis: Synthetic method can greatly reduce the manufacturing cost of hyaluronic acid, but the structure is less pure. Microbial fermentation: It can set the molecular weight size according to the design of the commodity, and the process is relatively simple, and it can produce high-purity products. From the three major sources of hyaluronic acid, we can know that microbial fermentation is the most suitable method for hyaluronic acid production. The raw material of Elivi is the high purity hyaluronic acid molecule from microbial fermentation, which forms a high concentration of sodium hyaluronate closest to the body’s own shape, safe and reliable. So, what is the molecular weight size? High and low molecules: This is a modifier for hyaluronic acid raw materials. Hyaluronic acid raw materials with molecular weight greater than 2.5 million daltons are called high molecules. The molecular weight of hyaluronic acid raw material is less than 1 million daltons called low molecule. Avery Wei hyaluronic acid as a cross-linked sodium hyaluronate gel does not exist in terms of molecular weight, and the size of the molecular weight can be analyzed when analyzing the raw material of hyaluronic acid ~ from this point of view, Avery Wei hyaluronic acid raw material is a high molecule of more than 2.5 million daltons. Some people may understand the molecular weight, but they are more confused about the small, medium and large molecules, what is the matter with these two? In fact, small, medium and large molecules are mainly to distinguish the size of the particles of the biphasic products, while Avery Wei as a single-phase products, is a homogeneous fluid gel, there is no distinction between small, medium and large molecules ~ particles have size.