A humidifier is a device designed to add moisture to the air, helping to maintain a comfortable indoor humidity level. It relieves dry air that can cause dry skin, chapped lips, sore throats, nasal congestion, and irritated eyes. Humidifiers also help reduce static electricity, support easier breathing, and create a more comfortable environment, especially during dry seasons or in air-conditioned rooms. Some humidifiers can also be used with essential oils (if designed for aromatherapy), filling the space with pleasant fragrances while improving air quality and comfort.