Heat pumps up oil
It’s unclear whether skin actually produces more oil when the weather is warm or whether it just appears slicker on a sweltering day. Think of your skin’s oil like a stick of butter, suggests Neal Schultz, MD, a dermatologist in Manhattan. “If you heat up a solid stick of butter, it turns to liquid and runs,” he says. “Hot weather heats up the oil on your face, making it liquidy and conspicuous.” Blot excess oil without clogging pores using oil absorbing sheets such as Earth Therapeutics Purifying Oil Blotting Sheets. (Cleansing with harsh ingredients can make the problem worse, by the way, so check out these face-washing mistakes you’re probably making.)
Damp means dewy
“People in damp, but not sunny, climates—think England—have beautiful skin,” says Lisa Airan, MD, a New York City dermatologist. Moisture in the air means hydrated skin, and less sun exposure means less sun damage. Case in point: the “English rose.” If you don’t live in a rainforest, add moisture to your face with regular spritzes of a facial mist—like Avène Thermal Spring Water or OleHenriksen Nurture Me Facial Water. Try these homemade face masks for even deeper hydration.