If you think a ski trip excuses you from needing sunscreen, think again. “The intensity of UVB exposure may increase as much as 8 to 10% per 1,000 feet of altitude elevation, board-certified dermatologist Dr. Carolyn Stull says. “In addition, UV rays are reflected by snow,” she continues, sharing that your best bet is to wear protective clothing and apply broad-spectrum SPF 30 or higher. Nurse practitioner Jackie Spagnuolo agrees, and reminds readers that wearing sunscreen is important regardless of what the day ahead brings. “Without sunscreen, you risk developing wrinkles, fine lines, and sun spots, which may require expensive treatments in the future,” she adds. The “perfect” sunscreen (aka one you’ll enjoy putting on daily) varies from person to person, but this K-beauty sunscreen is a particular favorite among beauty editors and Amazon shoppers, thanks to its lightweight, serum-like feel.