Hyaluronic acid is widely found in the human body and is one of the several glycosaminoglycans that make up the extracellular matrix. It is most abundant in the human skin dermis and joint synovial fluid and has important physiological effects such as water retention and lubrication.

Source
Currently, hyaluronic acid is mainly produced by microbial fermentation.

Purposes
It is a common moisturizing ingredient in cosmetics.

It is widely used in cosmetics, health food, cosmetic surgery and medicine because of its unique qualities of water retention, lubrication and good biocompatibility with human tissues.

Efficacy
Large molecule hyaluronic acid has the function of moisturizing and water-locking. When applied to the skin, it forms a water-binding film, slowing down water evaporation and making the skin soft and elastic.

A decrease in the production of hyaluronic acid in the skin leads to facial dryness and wrinkles. Therefore, hyaluronic acid is widely used in medical aesthetics for wrinkle filling and facial plumping.

Applications
It is commonly used in various skin care products for moisturizing.