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.

Why`s hyaluronic acid so magical? For starters, HA can bind up to 1000 times its weight in water! In other words, it functions as a humectant and holds water molecules onto the surface of your skin to keep it nice and hydrated.

Anytime we`re talking about skin that`s well-moisturized, we`re mainly referring to skin that has a lot of water content. Perhaps you`ve heard the term transepidermal water loss, or TEWL for short? This is the scientific term for the measurement of how much water is evaporated from the skin.

When a product prevents TEWL, that means it`s keeping your skin hydrated by making sure that water doesn`t escape from your skin`s surface. Hyaluronic acid does exactly that by slowing the rate at which the water evaporates.

Apart from being a very effective hydrator, a couple of studies have also found that it`s very good for healing wounds, too!