Facial skin allergy has caused troubles to many people around us and has brought serious impact on people’s life and work. Facial skin allergy is relatively stubborn, should not be cured, and the chance of recurrence is high, so people are very annoyed, more terrible is facial skin allergy is often accompanied by concurrent diseases, in order to be able to timely detection of facial skin allergy, timely treatment to prevent facial skin allergy, facial skin allergy how to do, so that you can avoid aggravating facial skin allergy symptoms, while strengthening the knowledge of facial skin allergy. The causes of skin allergy include two major aspects: intrinsic factors and extrinsic factors: intrinsic factors are having an allergic body, which plays a leading role in the development of skin allergy. Early and complete desensitization is the key to treating skin allergies to prevent recurrence. There are also many extrinsic factors. These include diet, inhalants, climate, and exposure to allergens. Among them, seafood, protein, spicy food, wine, inhalation of pollen, dust mites, cold weather, exposure to chemicals, soaps and detergents are the most common triggers of skin allergy. Because of such complex causes, skin allergies are recurrent due to numerous intertwined causes and triggering factors. I. Internal causes of allergy 1. The skin structure is damaged. 2. Decreased immune and protective functions of the skin. External causes of allergy: 1. exposure to wind, cold, heat, spice, sunlight, excitement, scratching, pressure, seafood, cosmetics, bites, dust, pollen, cold water, etc. 2, all kinds of fake and shoddy cosmetics or cosmetics that are not suitable for you. 3.After herbal or chemical peeling. 4.Long-term external rubbing of hormone-containing ointment or cosmetics. 5.Oily skin or acne healing after damage to the skin. 6, age: perhaps the growth of age is an important reason for skin sensitivity. Some people’s skin was not sensitive in previous years, but it has become sensitive in the past few years. This is because the surface of young healthy skin has a weak acidic sebaceous film that retains moisture to protect the skin from external aggressions, but as we age, this sebaceous film is not as healthy as before, so that some sensitive substances can easily invade the skin. 7, pets: sensitive skin is easily allergic to the fur of domestic pets and other allergic phenomena. The reason for this allergy due to pets is mainly due to the proteins secreted by the oil glands of dogs and cats. When pets lick their fur, these proteins get on the fur and are scattered into the air and attached to the human skin. 8, seasonal changes: due to a variety of environmental factors, the air scattered bacterial spores and pollen and other allergenic substances will be released in large quantities of almost all tissues throughout the body compounds – histamine, causing facial skin allergies. 9, temperature changes: the temperature is hot and cold, so that sensitive people facial redness, burning. 10, ultraviolet light: UV radiation causes facial skin allergy. 11, idiosyncratic body. Treatment care 1, should stop using all cosmetics, so that the skin has a buffer time, if you usually use hypoallergenic skin care products, you can continue to use; if it is the first time or occasional occurrence of sensitivity, and usually do not use hypoallergenic care products, then we should choose with anti-inflammatory, calming effect of skin-specific care products, after washing the face with water to use. Generally speaking, after a few days, the redness will be eliminated. 2, strengthen the skin’s resistance is also effective basic countermeasures, such as adequate sleep, a balanced diet, emotional harmony, away from the pollution environment and allergens, reduce skin irritation, etc.. Minor allergies will recover soon if handled properly. Points to note during treatment: First, try to avoid prolonged exposure of the skin to strong sunlight and cold, heat, wind and other adverse weather conditions. These climatic conditions tend to make the skin itchy, red and swollen, or aggravate the lesions of the original skin disease, and in serious cases, vesicles and flowing water, especially for patients with acute skin disease. Secondly, it is forbidden to scratch the affected area with your hands (such as lifting dander, squeezing blisters, scratching the skin, etc.), otherwise it is more likely to make the skin injured, aggravate the condition, and even cause toxic infection. Third, do not use too hot water to scald the affected area. The disease in the head should sleep on a higher pillow, in the lower extremities to minimize walking; in the trunk of the best to wear loose surface smooth underwear, and avoid the stimulation of chemical fiber, fur products; in the place where the hair is born, the hair here with scissors to cut and push, do not shave with a knife, because the stimulation of the knife may aggravate the disease; disease in the acute period to avoid the humid environment, and do not drink more water and wash with water, otherwise may cause co-infection. Fourth, regular life, peace of mind, avoid excessive mental tension. After long hours of work must pay attention to rest and adjustment. Fifth, eat more soy products and river plants such as lotus, lotus seeds, lotus root, rhizome, gorgonian (chicken head rice). Eat more fresh vegetables and fruits, eat some animal organs and lean meat appropriately, eat less greasy food, forbid fish, shrimp and other seafood, drink less alcohol and eat less stimulating food. Preventive health care 1, to stay away from allergens. Because allergy symptoms will last forever and cannot be cured, you can only be careful at all times to avoid contact with allergens that may cause allergies. 2. Be clear about the skin care products you use and their usage. Avoid substances that are highly efficacious, overly active and may cause skin irritation. Excessive and inappropriate use of strong cleansing products can destroy the natural protective tissue on the surface of the skin; cosmetics that are too active and can speed up blood circulation can also irritate the skin and cause damage. Do not use soap detergents such as medicated soap to wash your face, because surfactants make the master of decomposing keratin, and should be strongly avoided. It is best to use emulsions, or non-soap soaps, which can adjust the pH and adapt to the skin. Products such as scrubs and exfoliants should be avoided. Use a simple cleansing and toning moisturizing procedure. 3, pay attention to the use of sunscreen products. Sensitive skin is thin skin layer, the UV rays are relatively defenseless, easy to age, so after rubbing on the basic care products as isolation, then sunscreen products will be better, but the ingredients of sunscreen products are also one of the factors that can cause irritation, so it is best not to apply directly on the skin surface. Some manufacturers have recently introduced sunscreens that contain fewer chemical ingredients and have physical ingredients that are relatively less irritating to the skin. Also avoid excessive exposure to the sun, because ultraviolet light penetration is particularly strong, frequent exposure to the sun will make the skin thinner and more easily stimulated.