Sunscreen vs. sunblock isn't just marketing jargon. Learn how chemical and mineral formulas differ, which protects better, and how to pick the right SPF for your skin.

Worried that SPF is breaking you out? Here is why sunscreen does not actually cause acne, the pore-clogging ingredients to avoid, and how to choose a lightweight formula that protects without congesting your skin.

Yes — UVA rays pass through glass and clouds. Here's when you really need sunscreen indoors and on overcast days, and when you can skip it.

The lips, ears, scalp, eyelids, and tops of your feet are the most-missed sunscreen spots. Here's how to protect every one of them.

One of the most common reasons people skip sunscreen is the fear it will cause a vitamin D deficiency. Here's what dermatologists and real-world research actually say — and why you don't have to choose between protected skin and healthy vitamin D.