Plenty of moisture in the skin, making it super moist. Contains twice as much nano hyaluronic acid, which easily penetrates into the stratum corneum (compared to our conventional product). Highly permeable, thick and rich serum is available in a generous 27 ml. A highly moist feeling can be obtained in a single application. Double the amount of hyaluronic acid (compared to our conventional product) Nano hyaluronic acid is easy to penetrate into the inner layers of the stratum corneum because its molecular size is about 1/100 of that of ordinary hyaluronic acid.