Start indoors. Rub on a proper coating (one shot-glass-sized dollop for an average body) 15 minutes before heading outside to allow sunscreen to be fully absorbed into skin. Apply before getting dressed so you won't miss a spot. FYI: Expiration dates do matter. Check the back or bottom of the bottle before applying.
Try this hack to reach your back: Cover a long wooden spoon in plastic wrap, smear on lotion and swipe in circular motions.
Don't skip your scalp—or the part in your hair. Use spray sunscreen to lightly mist your hairline and any exposed area on the top of your head. Hair products with UV filters are formulated to protect your hair color, not the skin underneath.
Don't count makeup with SPF as protection on beach days. You'll be much less generous with foundation than you would be with actual sunscreen.
Even when practicing sun safety, sunburns can happen. When a day outdoors leaves you more burned than bronzed, find relief with these quick fixes from top docs.
"The best thing for a burn is unscented aloe vera gel. Put it in the fridge for a cooling effect." —Debra Jaliman, MD, dermatologist in NYC and author of Skin Rules
"Try a cold milk compress—lactic acid and probiotics are soothing—or sunflower oil to help skin repair itself." —Whitney Bowe, MD, dermatolgist in New York
"Take a dose of ibuprofen to bring down inflammation." —Alicia Barba, MD, dermatologist in Miami