If the humidity in heated rooms too low can lead to harsh and itchy skin. In a room temperature 20 to 22 degrees, the room humidity at 40 to 60 percent, recommends the skin prevention campaign in Berlin. The measurement is the best with a hygrometer. To protect against dry air contributes to regular, short airing at wide open window. Much drink helps the mucous membranes in the self-cleansing process. Furthermore, it makes sense, oily creams to apply than in the summer, such as vegetable oils such as almond or borage oil, advises the campaign. It is used by about 100 public health insurance and accident insurance taken.