Hyaluronic acid, also known as HA, is a natural compound found in skin that has many important functions; including holding in moisture, providing cushioning, aiding in tissue repair, holding together the skin structural components collagen and elastin, and helping create a protective barrier against microorganisms. Hyaluronic acid isn’t harsh or skin-stripping. In fact, it’s the exact opposite – a powerful humectant (aka moisture-binding ingredient) that keeps skin plump and hydrated. Hyaluronic acid is a naturally occurring polysaccharide (carbohydrate) in the human body. It’s present in large amounts in the spaces between skin cells, where it provides moisture, plumpness, firmness and suppleness to the skin. Hyaluronic acid is one ingredient that works across the board. Every skin type, even oily, can benefit. Not only does Hyaluronic Acid help skin retain natural levels of hydration, but it also helps protect against moisture loss so skin is left looking plump, smooth, and supple all day.