This Hyaluronics Serum from Mary & May skincare is a lightweight multi low-molecular serum that is recommended for those with dehydrated skin. MARY & MAY Hyaluronics Serum is a serum formulated with small molecular structure of hyaluronic acid that penetrates the skin between skin cells and moisturize from within. It effectively replenishes hydration with hyaluronic acid that holds 1000 times of its weight in water, leaving plump and supple skin. The hyaluronic acid helps to hold moisture to the skin's surface by preventing evaporation, retaining hydrated skin. Hyaluronic acid is an excellent source of moisture. Mary & May uses low molecular hyaluronic acid to increase absorption to fill the skin with moisture. In addition, it contains five different hyaluronic acid compounds, filling the skin to the epidermis in three dimensions to transform dry skin moist and elastic. Low molecular hyaluronic acid penetrates into the skin to improve hand drying and increase skin volume, while medium/high molecular hyaluronic acid provides rich moisture to the skin's epidermis and base layers and forms a hyaluronic acid membrane to maintain penetration into each pore. Mary & May hyaluronic acid provides a unique smooth touch when used for the first time, but after absorption, it fills the skin with moisture without leaving any residual sensation or oiliness.