I used sunscreen, why is the skin worse?

“Occasionally, after using sunscreen once, my skin began to be allergic, and now it is red and itchy...” Ms. Zheng told reporters. The dermatologist said that Ms. Zheng’s situation may have been caused by unqualified sunscreen.
Since the summer, nearly one-third of outpatients with skin diseases have developed symptoms due to improper use of sunscreen cosmetics. Most of them are mainly skin allergic symptoms, while some serious patients have redness and other symptoms on their face. According to experts, many consumers do not understand the use of sunscreen cosmetics, blindly buying and using, which leads to the phenomenon of “spending money and disfiguring”.

I used sunscreen, why is the skin worse?

Some women report that they usually pay attention to sun protection. The sunscreen with different SPF values ​​(ie sun protection factor) is also used at home. It must be smeared before going out, but it is still unavoidable to be sunburned. In this regard, hospital medical beauty experts pointed out that sunscreen can effectively resist UV protection of the skin from harm, in addition to product quality, whether the correct use is another important prerequisite for its function, and in the patients treated, it can be said Eighty percent of people do not understand the correct use of sunscreen.
Sunscreen Misunderstanding -
Misunderstanding 1: The thicker the sunscreen is, the better. Many girls like to apply thick sunscreen before going out, thinking that this can avoid the chasing of the sun. But the truth is not.
There are two reasons: First, sunscreen products are made up of chemical substances. Under the action of high temperature and human sweat, the chemicals in them can irritate the skin and even cause skin irritation. Second, too much sunscreen will block pores and sweat glands, which is not conducive to the secretion of sweat and sebaceous glands, and easily induce skin infections and cysts.
Myth 2: The higher the sun protection index, the better the sunscreen is. The more you choose sunscreen, you should pay special attention to its sun protection performance, that is, the ability to filter and block ultraviolet rays (SPF and PA). Sunscreens are generally labeled with SPF and PA indices. Some people think that as long as you buy expensive sunscreen with high sun protection index, you will be foolproof. This is actually a kind of misunderstanding. Because the higher the sun protection index, the more chemical components it contains, the greater the irritation to the skin and the greater the chance of reactions such as allergies. The right way to do this is to choose a sunscreen based on your skin characteristics and sun protection needs. Try it on the inside of your wrist before purchasing sunscreen. If within 10 minutes, the skin appears red, swollen, painful, itchy, etc., indicating that you are allergic to the product, you should switch to other products.
When purchasing sunscreen products, you should first consider what your sunscreen needs are. If you only use it on the way to and from work, choose the sun protection index at around SPF15. For long-term outdoor activities or travel, it is recommended to use SPF20 or so. If you want to swim in the hot sun or go to the beach to swim, you should use SPF30 or sunscreen with waterproof function.
Myth #3: As long as you apply sunscreen, everything will be fine. Many people think that if they apply sunscreen, they can safely go out and never get sunburned or sunburned. actually not. The most sensible option is to avoid going out during the strongest hours of sunshine. Even if you go out, you should do double protection: apply sunscreen and support parasols.