Winter weather can cause eczema to worsen. Anytime your skin is exposed to frigid air, it needs a protective barrier to protect it from moisture loss. On any skin areas, such as the face or neck, be sure to heavily apply a moisturizer. Moisturizers will help you avoid dry and cracking skin because it locks in your skin's natural oils.
For those that have eczema, skin care must be modified in the cold, dry winter months. During these months, you should use an oil-based moisturizer. The oil in these moisturizers promote moisture retention. The best form of moisturizer to use in these circumstances is an ointment due to the amount of oil it contains. Since ointments are 80% oil, it protects the skin more effectively than either lotions or creams.