Our Pure Hyaluronic Plumping Serum is natural and absorbs instantly to lock in moisture. Hyaluronic Acid is the ultimate ingredient to help restore the skin's hydration levels and give skin a plump, healthy appearance while boosting the performance of the rest of your skincare products. Hyaluronic Acid - Hyaluronic acid (HA) is a sugar found naturally in skin that holds water and helps keep it hydrated and plump. The HA within our bodies holds a thousand times its weight in water to not only retain all that moisture in our skin and joints, but also prevent all that moisture from evaporating into the air. When used in skin care products like creams and serums, hyaluronic acid brings moisture to the surface of your skin, improving elasticity and decreasing the appearance of fine lines.