Promote plumper, firmer-looking skin with Perricone MD’s High Potency Hyaluronic Intensive Serum, a lightweight formula offering instant and long-lasting hydration.Designed with an exclusive Hyaluronic 4 + 2 Complex, combining four forms and two natural building blocks of hyaluronic acid, the serum works to plump your skin with moisture. Fine lines appear minimised and a dewy radiance is summoned. Supported by niacinamide to brighten, the serum leaves your complexion feeling smooth and supple.In clinical and consumer testing: 97% saw improved skin hydration for 72 hours*, 86% saw softened fine lines** and 85% felt firmer, more supple skin**.*In a clinical study of 35 women. **In a consumer study of 109 women after 28 days.