A sunscreen is a crucial skincare product designed to protect the skin from harmful UV rays. It acts as a shield against UVA and UVB radiation, preventing sunburn, premature aging, and skin damage. Regular use of sunscreen reduces the risk of dark spots, wrinkles, and even skin cancer. Modern sunscreens often offer additional benefits like hydration, matte finishes, or a lightweight texture, making them suitable for daily use. For optimal protection, choose a broad-spectrum formula with at least SPF 30 and reapply every 2-3 hours when exposed to the sun.