Pump Up the Humidity
If dry, cold winter air is sucking the moisture out of your skin, then fight back with a humidifier. Humidifiers are inexpensive devices that increase the relative humidity of the air and effectively keep moisture inside sensitive skin -- without any fancy products.
There are many different kinds of humidifiers. Some use heat to create steam, while others simply circulate the moisture from a container of slowly evaporating water. Some homes and buildings have humidifiers built into their central heating and cooling systems. These systems use a hydrometer to measure relative air moisture levels and automatically maintain a desired 30 to 50 percent humidity reading [source: Mayo Clinic].
Remember to keep your humidifier clean and change the water frequently -- preferably daily. You don't want to circulate bacteria and fungi around the room as you sleep.