The most important thing to avoid dermatitis recurrence in summer is to cleanse and moisturize, followed by paying attention to sun protection and avoiding scratching. Proper face washing can promote recovery from the disease and avoid recurrence. When washing your face it is recommended that the water temperature is closer to the skin temperature to avoid causing irritation. If you feel that it hurts to wipe your face, you can also wet a towel with cold boiling water and put it on your face, which also has a good cleaning effect. Remember to apply moisturizer after washing your face. For the online recommendation of alternating hot and cold water washing, some skin “strong” patients, so wash your face can improve skin elasticity, but sensitive patients may not be able to stand the heat stimulation, dermatitis will be aggravated. If you have a hot day or if you have oily skin, you can wash your face a few more times; if your dermatitis is leaking some purulent secretions, you can wet compress with 3% boric acid water to clean it; but for dry skin patients, too much washing can damage the skin’s stratum corneum and make the dermatitis worse. Because of the strong sunlight in summer, many dermatitis will be aggravated, so patients should pay attention to avoid photosensitive foods, the most common are fresh black fungus, lemon, carrots, celery, anise cinnamon, some wild vegetables also have some photosensitivity; there are some oral drugs will also contain some photosensitive substances, such as sulfonamides, painkillers, diuretics, certain antihypertensive drugs, will make the dermatitis aggravated. Swimming is a common summer sport, but patients with facial dermatitis should pay attention to sun protection and be sure to apply waterproof sunscreen before going into the water; it is not recommended that patients go swimming at the beach, because the reflection of the sea level, the daylight will be stronger, in addition to the seawater also has a certain irritation, ordinary people go to the beach body will be sunburned, let alone dermatitis patients. Another common problem in summer is mosquito bites, which can cause patients to scratch and aggravate the symptoms of dermatitis; and we do not recommend patients to use flower lotion to repel mosquitoes and relieve itching, as the alcohol content of flower lotion can aggravate dermatitis, and the musk content is also a photosensitive substance, which can also affect the condition to some extent. We recommend that if the skin is itchy, you can use a paper towel or towel wet compress, you can also lightly pat to stop the itch, never scratch. In fact, the prevention of dermatitis is not difficult, in addition to avoiding allergens, the most basic thing is to pay attention to timely cleaning, pay attention to moisturizing and sun protection, especially the face, be sure to clean before going to bed.