Laneige Water Bank Hyaluronic Serum delivers deep hydration and firms skin. This serum utilizes blue hyaluronic acid, fermented with deep sea algae, to ensure quick, intense, and lasting moisture. Formulated with peptides, the serum also works to improve skin firmness and bolster the skin barrier against daily stressors. Skin emerges supple, radiant, and healthy, ready to face the day.