Over the years, hyaluronic acid has become a star ingredient in skincare. Naturally present in our bodies, HA holds up to a thousand times its weight in water, making it partly responsible for maintaining hydration, elasticity, and preventing fine lines and wrinkles. Over time, its effects slow, resulting in loss of facial volume.

Luckily, there are plenty of topical hyaluronic acids available on the market. HA draws in moisture from the air, and works especially well when layered underneath a rich moisturizer. The acid repairs the skin's moisture barrier, giving you a complexion that is luminous and firm. It's also non-irritating and works well on most skin types.

If you're looking for a more dramatic result, hyaluronic acid also comes in the form of a naturally-dissolving injectible, making it ideal for those looking for a short-term pick-me-up.