1) Apply broad-spectrum sunscreen with SPF 30 or higher daily, especially to areas prone to skin cancer like legs for women and backs for men. 2) Reapply sunscreen every 15 minutes and don't rely on makeup for protection. Apply a lightweight, oil-free sunscreen to the face and neck, and wear a hat instead of a baseball cap. 3) Use a lip balm, lipstick, or sunscreen with SPF 30 on lips. Avoid glossy lip shades when spending long periods outside.