Our Research and Development team has developed our REJUVENATE Hydrating Serum with 100% pure, concentrated high-quality Hyalorepair® Hyaluronic Acid sourced from Japan, a new hyaluronic acid that penetrates the skin and retains moisture even after washing, unique from most common hyaluronic acid products. Composed of the highest quality, cruelty-free ingredients, our Hyalorepair® hyaluronic acid product consists of finer molecules that better penetrate and deliver the solution to your skin, providing twice as much skin moisture as common hyaluronic acid products. This product is suitable for all skin types, and also provides a skin barrier that protects more sensitive skin. The high moisture retention of our product will help your skin feel refreshed and smooth as silk within a few days of usage, if not immediately. In healthy skin, the lamellar layer acts as a barrier to prevent skin from water evaporation. In dry skin, however, an out-balanced lamellar layer causes disorder of the barrier function, resulting in dry skin caused by water evaporation. Hyalorepair® repairs the out-balanced lamellar layer and returns dry skin to normal condition, helping the skin to retain its moisture. Applying Hyalorepair® not only prevents skin from water evaporation, but also improves damaged skin and overall moisturization of the skin.