A woman’s face redness may be caused by capillary expansion, frostbite, skin sensitivity and other reasons. 1. capillary expansion: may be due to emotional or hot and cold stimuli, resulting in capillary expansion, but most of this is a one-time, will soon be able to subside. However, it may also occur repeatedly due to emotional or temperature changes, which is related to the individual’s physical condition. 2. Frostbite: Frostbite can lead to obstruction of blood circulation, stagnation of blood vessel walls, making the face show strips of red blood. If the face is frostbitten, the local skin will appear reddish halo phenomenon, and in severe cases there will be erythema, edema symptoms. 3. Skin sensitivity: some people with a thin stratum corneum are more sensitive to external sunlight, cosmetics, temperature, etc., contact with these will be allergic to face redness, may also be in contact with other abnormal substances caused by peripheral blood vessels tighten and loosening, showing repeated bruising, redness and halo phenomenon. There are also symptoms of itching, redness and swelling of the skin. If a woman has the symptoms of redness, it is recommended to go to the hospital in time to identify the cause of the disease and treatment.