Hyaluronic acid, pronounced as hi-ah-lew-ron-ic, is a naturally occurring, sticky and slippery substance produced by the body.

It can be found in various parts of the body including the eyes, skin, and joints and is also referred to as hyaluronan or hyaluronate. The remarkable water-retaining ability of hyaluronic acid, holds up to 1,000 times its weight in water.