The scientific name of hyaluronic acid is hyaluronic acid, also known as uronic acid.

Hyaluronic acid is a kind of macromolecular mucopolysaccharide with D-N- acetylglucosamine and D- glucuronic acid as structural units. It is a transparent colloidal crystal of natural polysaccharide, which exists in human connective tissue and dermis.

Hyaluronic acid is a transparent and viscous colloidal substance, and its aqueous solution is a viscoelastic fluid, which is filled in the gap between skin tissue cells and collagen fibers. When hyaluronic acid absorbs water, elastic fibers and collagen are in a humid environment, which provides a suitable environment for activating autologous hyaluronic acid cells and improves the utilization rate of collagen. The two interact, so the skin is elastic.