A humidifier is a device that makes the air in your home more moist. They are often used during cold months when people run the heat more to keep themselves warmer. Breathing in dry air can cause irritation, coughing or nosebleeds.
A humidifier adds moisture back into the air which makes it feel warmer and easier to breathe, without adding extra warmth.
Humidity can help relieve dry skin, itchy throat, sore eyes, coughing and sneezing. The benefits of using a humidifier are that you may have less problems with allergies or asthma, your breathing might be easier, and your skin may feel softer because the moisturized air will hydrate it.