SPF, broad spectrum, 80 minutes, PA+++, a wall of chemical names — here's how to decode any sunscreen bottle in about thirty seconds and know exactly what you're buying.

Morning SPF stops working around lunchtime — but nobody wants to wash off a full face to fix it. Here are four ways to reapply sunscreen over makeup, ranked by how well they actually protect you.

More than 300 medications can make your skin burn faster — including common antibiotics, ibuprofen, acne treatments, and blood pressure pills. How to recognize the reaction and protect your skin.

Sunscreen expires — usually three years from manufacture, and far sooner if it spent the summer in a hot car. How to check the date, the warning signs, and when to throw it out.

Mineral or chemical sunscreen — which is actually better? How each type of UV filter works, who should choose which, and the thing that matters far more than the debate itself.