We all know how destructive UV rays are to the skin. When the skin is exposed to gaze UV radiation, a rash occurs on exposed areas such as the face, neck and back of the hands. Depending on the severity of the skin reaction, it can be divided into mild heliodermatitis and severe heliodermatitis. Mild heliodermatitis is characterized by diffuse erythema of localized skin after sun exposure. Severe heliodermatitis is characterized by localized skin redness and swelling followed by blisters or even large blisters with tense walls and yellowish blister fluid. Self-perceived symptoms include burning or tingling sensation. The blisters rupture and become vesicles, which soon dry and crust over, leaving pigmentation behind. Very severe UV allergy can be accompanied by systemic symptoms such as fever, headache, palpitations, fatigue, nausea and vomiting. Therefore, once the sunshine is strong in the spring, summer and autumn, people are used to using sunscreen to protect their skin, and think that the greater the sun protection factor, the safer. Unbeknownst to them, sunscreen is also an important allergen. There are many UV allergy sufferers whose real allergy may be caused by sunscreen. This is because the essential ingredient in sunscreen, sunscreen, is a substance that can easily cause skin allergies, and no matter how well-known the brand is, it is no exception. It really doesn’t say anything about its benefits to the skin except that it helps protect us from UV rays. So, for people with sensitive skin, you must do an allergy test before using sunscreen to make sure you are not allergic before applying it on your face. In addition, do not think that the sunscreen can be applied freely in the sun, and do not think that the greater the sun protection factor, the better, the sun protection factor indicates the addition of high sunscreen agent content, more likely to lead to allergies. The main thing is to be sure to reduce sun exposure in the hot summer months and take appropriate protective measures for your skin. And the use of UV-protective sunshades can do nothing at all for the UV rays reflected from the ground and walls. For patients with solar dermatitis and UV allergy can be treated by the following methods: 1. People with a history of summer dermatitis can apply appropriate external sunscreens to protect their skin to minimize damage from various wavelengths of UV and visible light. 2.When outdoors, use a wide-brimmed protective cap or umbrella to shield the skin from prolonged exposure to the sun. 3, do not use cosmetics containing more photosensitive substances, such as fragrances, etc. 4, can eat more vitamin A-rich food and fresh vegetables and fruits to maintain the normal function of the skin. The actual fact is that you’ll be able to get a lot more than just a few of the most effective and most effective products. 5, wash your face as much as possible without hot water, alkaline soap and rough towels. 6, every day should adhere to do facial beauty exercise. The method is: five fingers together, the two palms rub each other after heating, gently massage the forehead, cheekbone skin and nose, ear, can continue to massage 3 to 5 minutes, in order to promote facial blood circulation, effective control of allergy attacks. Patients with severe allergies, recurrent allergic symptoms and persistent allergy should improve their allergic constitution urgently. Some strong antioxidants such as procyanidin OPC, lycopene, B vitamins, etc. can be taken. In particular, procyanidin OPC has a very good effect on improving the allergic constitution and preventing recurrent UV allergy attacks.