With Hibiscus Flower Extract Intense hydration while supporting plumper, softer, smoother, brighter skin with enhanced elasticity and bounce. Hyaluronic Acid Hyaluronic acid (HA), also called hyaluronan, is naturally produced by the human body. It hydrates the skin by holding up to 1000x its weight in water and supports collagen production and the skin's structural support. Over time, the amount of naturally-occuring hyaluronic acid decreases. This may result in diminished plumpness and firmness in mature skin. Hyaluronic acid serum is a humectant. This means that it holds water, keeping the skin moisturized. It is a powerful ingredient, yet safe and gentle, and it easily integrates with most other products in your skin care regime.