No matter your skin tone, sunscreen keeps your skin safe from harmful UVA and UVB rays. But to use it right, you need to know a few things: What SPF to use, how often to reapply and the difference between chemical and physical sunscreen. We explain what to look for on the back of a sunscreen bottle and how to use it effectively.Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)
