Humidifier therapy adds moisture to the air to prevent dryness that can cause irritation in many parts of the body. Humidifiers can be particularly effective for treating dryness of the skin, nose, throat, and lips. They can also ease some of the symptoms caused by the flu or common cold.

What is the main purpose of a humidifier?

A humidifier puts moisture into the air. That can be especially helpful in winter, when the weather and indoor heating systems can make the air dry -- and dry out your eyes, nose, lips, and skin. You should aim for 30% to 50% humidity in your home.

Is a humidifier really necessary?

Humidifiers can ease problems caused by dry air. But they need regular maintenance. ... Dry sinuses, bloody noses and cracked lips — humidifiers can help soothe these familiar problems caused by dry indoor air. And cool-mist humidifiers also may help ease symptoms of a cold or other respiratory condition.