Perricone MD has expanded its High Potency collection with its new Hyaluronic Intensive Hydrating Serum.  It is formulated with Hyaluronic 4 + 2 Complex, which features four forms and two natural building blocks of hyaluronic acid to provide instant and long-lasting hydration for a smoother, plumper-looking complexion and a visible reduction in fine lines and wrinkles, according to the brand. A mix of molecular weights allows the complex to penetrate different layers of skin. The formulati...