This Hydrium Triple Hyaluronic Moisture Ampoule from Cosrx is designed to deliver intensive hydration to the skin through a multi-level approach. Formulated with three types of Hyaluronic Acid, it penetrates different layers of the skin to replenish moisture reserves, resulting in a plump and supple complexion. Ideal for use as a targeted treatment before moisturizers, this serum helps to fortify the skin's moisture barrier and provide long-lasting hydration throughout the day.