PolitiFact asked board-certified dermatologists to answer people's burning questions about SPF. When it comes to sunscreen, they advised buying broad-spectrum sunscreen that’s SPF 30 or higher and reapplying regularly.
This article originally appeared on PolitiFact
The numbers that signal summer's approach are here: The countdown to the last day of school. A 90-degree forecast. And, of course, SPF 30. Or 50? Or maybe it's time to break out SPF 100?
SPF stands for s... [3851 chars]