Do you really know how to protect yourself from the sun? How to protect yourself from the sun? Below I have summarized some of the misconceptions of sun protection to give you a read. 1, sun protection is to protect against UV rays, so in the indoor with glass there is no need to protect from the sun. Wrong! Sunlight in addition to ultraviolet light can cause skin tanning, sunburn, photoaging, and even photocarcinogenesis, visible light and infrared light can also, and the proportion of more than 90%, visible light can also induce the production of oxygen radicals, infrared light by destroying the integrity of the mitochondrial membrane, and heat-sensitive receptors combined to produce oxygen radicals, which in turn cause premature aging. And all this light can pass through the glass to continue to damage the skin! 2, only need to use sunscreen in summer, I can not use up my bottle. Wrong! Sunscreen is not seasonal, spring, autumn and winter although the temperature is low, but the sun’s ultraviolet rays and visible light damage to the skin is not reduced. 3, sunscreen can be used once a day. Wrong! Sunscreen in the face is generally effective for about 4 hours, if the summer sweat, wash your face, etc., sunscreen will be lost faster, so sunscreen recommended 3-4 hours to replenish once, giving priority to efficient anti-water sunscreen. Even if you use sunscreen, you can not increase the time exposed to the sun, you should use sunglasses and umbrellas when you go out, try to reduce outdoor activities between 10 am and 4 pm in summer, and also try to avoid photosensitive vegetables such as parsley, celery and ninhydrin when you are out and about. 4.As long as you use sunscreen properly you will definitely not get sunburned. Wrong! Even if you use sunscreen, you should not increase the time you are exposed to the sun, use sunglasses and umbrellas when you go out, try to reduce outdoor activities between 10am and 4pm in summer, and avoid eating photosensitive vegetables such as parsley, celery and ninebark when you go out. Tips: If you are not sure about your skin type, you can come to the hospital to consult a dermatologist, and if necessary, perform skin-related tests to choose the right and effective skin care products. For those with sensitive skin, medical skin care products (also known as pharmaceuticals) are recommended.