The COSRX Hydrium Triple Hyaluronic Moisture Ampoule is a concentrated serum featuring three types of hyaluronic acid to provide deep and lasting hydration. It helps improve skin elasticity, protect against dryness, and leave the skin soft and firm. Apply after cleansing and before moisturizing as part of your daily or nightly skincare routine. Suitable for all skin types, including sensitive skin, leaving the complexion refreshed and radiant.