Fluctuations in temperatures could lead to irritation, in addition to dryness. Luckily, there are some easy fixes to prevent this. “Don’t pump the heat indoors," says Gohara. "Keep it within reason. Also, warm, not hot, showers help. Lastly, humidify the air to soothe the skin.” Set up a humidifier, like the PureGuardian Nursery Ultrasonic Cool Mist Humidifier, $21.49, in your bedroom.