A spritz of your favorite scent can make your skin more sensitive. "When chemicals in fragrances react to UV rays, they can cause red rashes, called phytophotodermatitis," says Debra Wattenberg, MD, associate professor of dermatology at Mount Sinai Medical Center in New York City. Instead, try a light layer of scented body lotion before your sunblock. My new go-to: Beyonce Heat Gold Sparkling Body Lotion ($24, Macy's). Since the cream dilutes the aroma, you'll stay safe and smell sensational.