Sodium Hyaluronate/ Hyalo-Oligo®/ Hyaloveil®-P 2%Hyaluronic acid (HA) is a natural substance distributed widely within skin tissues, complementary cells, and collagen fibers. It retains water, enhances skin volume, and keeps skin hydrated, glowing, and elastic, but starts to diminish as one ages; under such circumstance, skin can become dull, dry, and wrinkled.HA is widely used in cosmetics for its high compatibility. Macro-molecular HA generates a breathable film on the surface of the skin, making it smooth and hydrated, and avoiding the intrusion of bacteria and ultraviolet (UV). Micro-molecular HA penetrates into the dermis, increases blood circulation, improves metabolism, maintains skin elasticity, and slows down skin aging. Furthermore, HA stimulates the reproduction and differentiation of cells in the epidermis, removes free oxygen radicals, and repairs damaged skin.Na-PCA 1%Na-PCA is a natural moisturizing factor humans are born with. As an amino acid derivative, it has an intense moisturizing effect and hardly causes sensitive reactions. Besides keeping the skin bouncy and smooth, it also helps get rid of melanoid pigment and makes the skin tender and white.