Hyaluronic acid – it sounds a bit like something out of a chemistry class, and actually, trying to describe exactly what it is can get a bit scientific. Naturally produced by your body, hyaluronic acid is a sort of clear substance, gooey in texture. You’ll find the majority of hyaluronic acid in your skin, as well as in your connective tissues and your eyes. It’s essential for keeping important parts of your body moist and lubricated for optimum functioning.