4 Things to Know About Sunscreen Reapplication

Reapply every two hours outdoors, even if you don’t feel sweaty. UV exposure is cumulative and invisible. You don’t need to be on a beach to get burned.

Window light counts as sun exposure. UVA rays pass through uncoated glass, causing aging and skin damage. If you work by a window all day, reapply at least midday.

Sunscreen breaks down from UV light, not just sweat or water. Even if you’re bone dry, the protection degrades over time. Set a timer if you have to.

Your skin doesn’t care if you find reapplying annoying. Damage happens regardless of your feelings about the process.