The COSRX Hyaluronic Acid Serum 100ml is a deeply hydrating serum formulated to replenish moisture, enhance firmness, and restore the skin’s natural plumpness. With a high concentration of hyaluronic acid—capable of holding up to 1000 times its weight in water—this powerful serum draws in and retains moisture to keep your skin soft, supple, and radiant throughout the day. Ideal for dry, dehydrated, or dull skin, the serum helps smooth fine lines, improve elasticity, and strengthen the skin barrier. The COSRX Hyaluronic Acid Serum 100ml absorbs quickly without leaving a sticky residue, making it perfect for layering within any skincare routine. Experience long-lasting hydration and a visibly healthier, more youthful complexion with this expertly formulated moisture-boosting serum.