Humidifiers A humidifier can truly make a difference in your home when dealing with dry lips and dry skin. Reduced moisture in the air can make your knuckles crack and healthy skin can become dry and rough. A home humidifier helps reduce these issues by putting moisture back into the air in one of two ways. An ultrasonic humidifier works by using high–frequency vibrations to create water mist and then releasing it into the air. This increases moisture, keeping your skin soft and hydrated. The other technique used by room humidifiers is by boiling water for an evaporative effect to put moisture into the air. When your humidifier has been working for a while, it is incredibly important to change the humidifier filter. This will keep it working at its maximum capacity so you can have soft skin and reduce those chapped lips, especially in the winter.