At the turn of spring and summer, when it is still warm and cold, the number of patients with unexplained redness, itchiness and peeling skin that do not heal repeatedly increases significantly. With the rise in temperature in spring and summer, the intensity of sun exposure increases, and the skin is prone to dehydration and dryness and is in a highly alert state of “restlessness”, which is often referred to as skin allergy. Ms. Yang usually pay more attention to skin care, often do hydrating mask, last week to go out of town back, facial skin dry itchy discomfort, but also a patch of red spots, very affect the “face”, specially registered a specialist number, want to completely improve the skin trouble. Through a week of wet and cold treatment red itch disappeared, is under the guidance of the doctor, began to do their own skin care. Normal skin has a sebaceous film, which acts as a natural barrier. When it is adversely stimulated by cosmetics, chemical agents, pollen, certain foods, polluted air, etc., the barrier is destroyed and the skin becomes red, itchy, peeling and other abnormalities. Therefore, rebuilding the skin barrier function is the key to treating skin allergies. So what are the common causes of sebaceous membrane destruction? Ageing causes the degradation of skin oil secretion function, skin becomes thinner and the function of protective layer is weakened; long-term exposure to sunlight or air pollution environment, facing computer radiation, etc.; long-term use of poor quality cosmetics, or hormone ointments such as Dermatoprene and Dermacare; and physiological factors, such as stress, mental tension and emotional depression, all weaken the skin’s natural resistance, causing its self-repair function to slow down as well. The skin’s natural resistance will be weakened and its self-repair function will be slowed down. What contingency measures should be taken for skin allergies? 1, should stop using all cosmetics, let the skin have a buffer time, the first time or occasionally occur sensitive phenomenon, you can wash your face with water, mineral water cold compress, and then apply some vitamin E cream moisturizing; if there is a continuous red phenomenon, we should go to the hospital for desensitization treatment, under the guidance of the doctor to do wet cold therapy, generally speaking, a few days later, the redness will be eliminated. 2, if the red itch repeatedly, or for several months or years, indicates that the sebaceous membrane function is seriously damaged, it is necessary to strengthen the skin and rebuild the skin barrier through phased treatment, like collagen dressing, recombinant human epidermal growth factor ultrasonic import treatment, etc., are non-hormonal therapy, using biological agents to supplement skin collagen, increase skin thickness and restore the sebaceous membrane function. 3, strengthen the skin’s resistance is also an effective basic countermeasures, such as adequate sleep, a balanced diet, emotional harmony, do not eat irritating food, etc.; Skin allergy daily care to pay attention to what? 1. Stay away from allergens and avoid contact with substances that may cause allergies. 2.Use mild, non-irritating skin care products and adopt a simple cleansing and toning and moisturizing procedure. Use new cosmetics, you should first do a skin test, the method is to apply the cosmetics to be used in the inner skin of the wrist more delicate places, left overnight or 2-3 days to observe its reaction, if there is an abnormal reaction, such as inflammation, redness, rash, etc., you must avoid using the cosmetics. 3, pay attention to the use of sunscreen products. Ultraviolet light penetration is particularly strong, frequent exposure to the sun will make the skin thinner and more easily stimulated. 4, in the diet, to eat more fresh fruits and vegetables, preferably including a large number of raw fruits and vegetables rich in vitamin C.