Check the expiration date on your sunscreen because they can lose their effectiveness over time. When applying, be sure to rub the product into the skin thoroughly, says Dr. Epperson. Re-application is important, especially when perspiring in the heat, he says. Sunscreen should be reapplied every two hours when outdoors (festival-goers are permitted to bring in bottles of sunscreen to use at the event).
And it’s important to hit more than just your arms, shoulders and nose. Make sure to apply protection to all areas of your skin subject to the sun, including your forehead, ears, scalp, tops of your feet (depending on footwear) and around your eyes and movable straps and waistbands.