COSRX The Hyaluronic Acid 3 Serum is a hydrating serum designed to replenish moisture and leave skin plump and dewy. Formulated with three types of hyaluronic acid, it penetrates deeply to provide lasting hydration. Suitable for all skin types, this serum helps to improve skin's elasticity and reduce the appearance of fine lines caused by dryness. Enjoy a smoother, more supple complexion with regular use.