Sunscreen can help you avoid the harmful effects of the sun’s ultraviolet rays, but the product must be applied properly to be effective.
The US Centers for Disease Control and Prevention offers these guidelines:
Today’s Health Tips
* Lather your skin with sunscreen about 30 minutes before you go outside, and always reapply after you swim or sweat heavily.
* If you spend a lot of time outdoors, reapply sunscreen several times throughout