Dry skin can be very problematic in cold weather. Between the general lack of humidity and the parching effect that heated, indoor air can have on your skin, the winter itch -- which is really just xerosis -- is a common problem [source: Skinsight]. Although establishing a daily skin moisturizing regimen is critical to winning the war against xerosis, humidifiers offer an alternative solution to fighting dry skin.
Humidifiers do exactly as their name implies -- they add moisture to the air. That might not sound like such a big deal, but it can be a huge benefit to people suffering from xerosis during the dry winter months.
Think of your skin as a sponge. It has the ability to absorb extra water when the air is humid, but skin will dry up and shrink when moisture is lacking. When you add moisture to the air with a humidifier, your skin is able to expand and keep itself hydrated. Humidifiers are available in a variety of sizes and price ranges, so if you're constantly scratching away at itchy winter skin, it might not be a bad idea to invest in one.