Hyaluronic acid, also known as hyaluronan, is a clear, gooey substance that is naturally produced by your body.
The largest amounts of it are found in your skin, connective tissue and eyes.
Its main function is to retain water to keep your tissues well lubricated and moist.

Hyaluronic acid has a variety of uses. Many people take it as a supplement, but it`s also used in topical serums, eye drops and injections.