6 Nighttime Habits That Make You Look Older
Why it's making you look older: You know that heat can dry out your skin, and that exacerbates wrinkles. It can also lead to eczema and atopic dermatitis flare-ups, and is a known trigger for rosacea, an inflammatory condition that accelerates the aging process, says Nazarian.
The fix: Everyone's ideal sleeping temperature is different, but a good rule of thumb is to find a temperature where you're just a little bit cool without a blanket, not straight-up cold. (You could also try using a humidifier in the bedroom to keep the air moist.)