The SKIN1004 Hyalu-Cica Water-Fit Sun Serum is a lightweight, serum-like sunscreen that provides SPF50 PA+ broad-spectrum UV protection while hydrating and soothing the skin. Formulated with Hyaluronic Acid and Centella Asiatica, it helps calm irritation, strengthen the skin barrier, and deeply moisturize. It absorbs quickly without leaving a white cast or greasy feel, making it ideal for all skin types—especially sensitive and dehydrated skin—and works well under makeup for daily use.