These days, the weather in Jinhua is getting hotter and hotter, so that many people face skin is very hurt. Jinhua Fifth Hospital, director of the Department of Dermatology Liu Dongmei said that today’s common “face” problem can be summarized in red, yellow, black. These three have a close relationship with sunlight. So, how do we protect their “face”? First, 10 a.m. to 2 p.m. to avoid sunlight exposure The so-called red, the most important is solar dermatitis, also known as sun spots, ultraviolet erythema or sunburn, is due to excessive irradiation of ultraviolet light in the sunlight on the human body’s normal skin after the occurrence of acute phototoxic reaction of the local skin, which is often referred to as solar allergy. In addition to erythema and swelling, blisters can occur in severe cases. If the area of sun exposure is large, it can also cause fever, chills, headache, fatigue, nausea and general discomfort and other symptoms. It should be noted that there are individuals in the sun only after sun exposure for the appearance of dark spots on the skin, sensitive people in the sun after 15 to 30 minutes, there will be sunburned local skin pigmentation sun spots, but this spot generally after a few hours will subside; insensitive people generally 10 hours after the appearance of dark spots in the sun, and gradually deepen, 4 to 10 days to reach the peak, the spot to last dozens of days and even This kind of spot will last for dozens of days or even months to subside. Of course, sometimes sunburn may also cause other light skin diseases, such as polymorphic sun rash, light lichen planus, cutaneous porphyria, acne-like blister disease, lupus erythematosus and so on. In addition, because sunlight exposure will make the skin surface congested with blood, accelerated circulation, resulting in increased itchiness, but also can make dermatitis, eczema and other skin diseases aggravated. So to put it bluntly, solar dermatitis are sunlight trouble, so the main means of prevention is to avoid light, to avoid skin damage caused by sun exposure, as well as the correct use of sunscreen cosmetics. It is recommended that the public should often participate in outdoor exercise to enhance the skin’s tolerance to sunlight, but to avoid the sun from 10 a.m. to 2 p.m.. If you have to go out, it is best to wear a sun hat or an umbrella, if necessary, wear long pants, or 15 minutes before receiving sunlight, in the skin will be exposed to apply sunscreen. Second, these photosensitive foods, drugs, cautious consumption Need special reminder is that in the factors that trigger solar dermatitis, photosensitive foods, drugs can easily be ignored. When this food, drugs digested and absorbed by the human body, which contains photosensitive substances will then enter the skin, if at this time irradiation of bright light, and sunlight chemical reaction, and then in the exposed parts of the skin on the redness, swelling, rash, and accompanied by obvious itching, burning or stinging sensation and other symptoms. Therefore, the public, especially hypersensitive people should beware of the following foods and drugs. 1, photosensitive food: mud snail, gray cabbage, purple daffodil, snowdrops, lettuce, fennel, amaranth, capers, celery, turnip leaves, spinach, buckwheat, parsley, safflower grass, greens, mustard greens, figs, oranges, lemons, mangos, pineapples and so on. 2.Photosensitizing traditional Chinese medicine: tonic acid, Angelica dahurica, dahurica, Zhu Huang, thorns, fengfeng, salvia and so on. 3.Photosensitizing western medicine: topical A acid, sodium salicylate, paracetamol, aspirin, Librium, oral contraceptives, estrogen and so on. 4, cosmetics spices: bergamot oil, lemon oil, sandalwood oil, musk, ambergris and so on. Reminder, nowadays many people are used to using sunscreen to protect themselves from the sun, but not the higher the sunscreen index the better. The public should be based on their own skin type and changes in the external environment to choose cosmetics, not one-sided belief in advertising, blindly choose a high sunscreen index of sunscreen products. In general, the sunscreen index value of 20 sunscreen products can absorb 50% of the sun’s medium-wave ultraviolet radiation; sunscreen index value of 25 sunscreen products can absorb and reflect 96% of the sun’s medium-wave ultraviolet radiation. If higher than 30, some sunscreen products in the greasy ingredients, sensitive ingredients will increase significantly, aggravate the burden on the skin, but will make the skin more injured, such as allergies and other problems. If the public appear sunburn, mild can only use cold water to wash your face, avoid strong exposure to sunlight can be, dry and then use some moisturizing skin creams. If there is redness or itchy symptoms, you can use some topical antipruritic agent, such as compound zinc oxide, etc., or with Chinese medicine amaranth decoction and other wet compresses. If the symptoms are serious, remember to go to regular professional hospitals for treatment in time. Avoid prolonged sun exposure The so-called chloasma is mainly referred to as melasma, which mostly occurs in young and middle-aged women, and is manifested as light brown spots or black plaques on the face and face, which can be as big as fava beans or as big as copper coins, with clear edges, smooth surface, no scales, no inflammation, and no obvious discomforts. They are found around the cheekbones, nose, forehead and mouth, and sometimes merge with each other to form a butterfly-like pattern, which is why they are commonly known as “butterfly spots” in folklore. The real cause of chloasma is not clear yet, but it is related to sunlight exposure, endocrine and sex hormone level change, micro-ecological imbalance of the skin, the use of low-quality cosmetics and emotional factors. To prevent and treat this skin disease, summer sunscreen is a very effective way. It is suggested that people, especially those who already have melasma, should try to avoid prolonged sun exposure. Secondly, it is necessary to prevent all kinds of ionizing radiation, including all kinds of glass-shelled displays, all kinds of fluorescent lamps, X-ray machines, ultraviolet irradiators, and so on. All of these undesirable stimuli can produce consequences similar to or even greater than those of strong sunlight exposure, leading to aggravation of pigmentation. Once again, it is necessary to pay attention to rest and ensure sufficient sleep. Lack of sleep can easily lead to dark circles under the eyes and make the skin become grayish-black. Finally, we should keep good mood. If someone has anxiety, irritability, depression, pain and other emotions, and lacks the necessary detoxification and effective channeling, it is likely to lead to endocrine imbalance and disorders and cause chloasma. Therefore, people should learn psychological self-regulation, look at problems positively, relax their moods, and maintain a cheerful and optimistic mindset. In addition, the blackness in “face” problems mainly refers to freckles, nevus of Ota, zygomatic nevus of brownish-green color, age spots, coffee spots, etc. These plaques are usually distributed on the face. These plaques are usually distributed on the face, some of them are born at birth or appear later in life, and the color is mostly dark brown. The color is mostly dark brown. Especially when exposed to sunlight, the plaques will be aggravated. Therefore, the public must protect their own “face” to avoid being attacked by the scorching sun. At the same time, it should be noted that if there are people who have more than 6 coffee spots in the whole body and the diameter is larger than 37.5px, the possibility of neurofibromatosis should be considered.