Entering the hot weather, all kinds of sunscreens are selling well. However, dermatologists warn consumers that such cosmetics may not be conducive to skin health. Why doesn't sunscreen work? It turns black and worse. It is because of the use of this kind of cosmetics, skin allergy, skin swelling, water seepage and other symptoms.
Consumer questions--
With sunscreen, why is the skin bad?
'after using sunscreen cosmetics once in a while, my skin began to develop allergies, and now I'm still red, swollen and itchy & hellip; & hellip;' Ms. Zheng told reporters. Dermatologists said Ms. Zheng's condition may have been caused by the use of substandard sunscreen.
Since the beginning of summer, nearly 1 / 3 of outpatients with skin diseases are due to improper use of sunscreen cosmetics. Most of them have skin allergy symptoms, while some severe patients have symptoms such as redness and swelling. Experts said that many consumers do not understand the use of sunscreen cosmetics, blind purchase and use, which leads to the phenomenon of 'spending money to disfigure'.
With sunscreen, why do you get sunburnt?
Some women report that they usually pay attention to sunscreen. They are equipped with sunscreen with different SPF values (i.e. sun protection factor). They must apply sunscreen before going out, but they still can't avoid sunburn. In this regard, the hospital medical cosmetology experts pointed out that whether sunscreen can effectively resist ultraviolet radiation and protect the skin from injury, in addition to the product quality, whether it is used correctly is another important premise to play a role, and in the patients treated, it can be said that 80% of people do not know the correct use of sunscreen.
Avoid sunscreen mistakes
Misunderstanding of sunscreen--
Myth 1: the thicker the sunscreen, the better
Many girls like to wear a thick sunscreen before going out, thinking that this can avoid the pursuit of the sun. But the truth is not.
There are two reasons: first, sunscreen is composed of chemicals. Under the action of high temperature and human sweat, the chemicals in them can stimulate the skin and even cause skin allergy. Second, too much sunscreen will block pores, sweat gland mouth, is not conducive to the secretion of sweat and sebaceous glands, easy to induce skin infections and cysts.
Myth 2: as long as you apply sunscreen, everything will be fine
Many people think that as long as you apply sunscreen, you can go out safely, and you will never get sunburn or sunburn. It's not. The wisest choice is to avoid going out in the strongest hours of the sun. Even if you go out, you should do double protection: apply sunscreen, hold sunshade.
Myth 3: the higher the sun protection index, the better, the more expensive the sun protection products
When choosing sunscreen products, we should pay special attention to its sunscreen performance, that is, the ability to filter and block ultraviolet rays (SPF and PA). SPF and PA index are usually marked on sunscreen products. Some people think that as long as you buy expensive, high SPF sunscreen products, you can be foolproof. In fact, this is a misunderstanding. Because the higher the SPF, the more chemical components it contains, the greater the irritation to the skin, and the more chances of allergic reactions. The right way is to choose sunscreen products according to their own skin characteristics and sunscreen needs. Before buying sunscreen, try it on the inside of your wrist. If within 10 minutes, skin redness, swelling, pain, itching and other conditions, indicating that they are allergic to the product, should change to other products.
When you buy sunscreen, you should first consider what your sun protection needs are. If you only use it on the way to work, you can choose SPF 15 or so; if you want to have a long time outdoor activities or travel, it is recommended to use about SPF20 sunscreen; if you want to move in the hot sun or go swimming on the beach, you should choose SPF30 sunscreen with waterproof function.
Sun cream tips
Only use sunscreen to remove makeup
The principle of sunscreen is to form a protective film on the skin to refract ultraviolet rays from the skin. Physical sunscreens and sunscreen agents are also oxidized with the growth of sunscreen application time. To a certain extent, the sunscreen effect will be weak, and it will disappear after a long time. The disadvantages of chemical sunscreen are: if used for a long time, it will cause skin dependence and damage skin cells and skin structure, especially cosmetics containing more lead and mercury, so the first task is to clean them in time. At the same time, when you go out in summer, your face will inevitably absorb a lot of dust, so when you come back from the outside, the first task is to remove makeup and thoroughly wash off the sunscreen on your face.
Ordinary facial cleansers with strong oil and fat properties can thoroughly clean chemical or physical sunscreen, and do not need facial cleanser with makeup removal function. Within a few minutes after washing the face, as long as you feel the face is not tight and greasy, it is a sign that the face has been washed clean. If you feel that facial cutin is too thick, such as blackhead on the nose, you can choose exfoliating facial cleanser. Of course, because many sunscreens are waterproof, it is better to use professional makeup remover.
See here, do you already know the reason why sunscreen doesn't work? Find out the misunderstanding, you can avoid unnecessary damage.