People will become dark after being exposed to the sun for a long time, why?

Because there are a lot of ultraviolet rays, ultraviolet rays can penetrate our **, make the original fair-skinned ** black, and also make ** hurt, so it will also form black, so in summer or when the intensity is too high, we must pay attention to the problem of sun protection.

Because ultraviolet rays will darken, the longer you get sunned, the darker it gets, but if you get sunburned for a long time, you should pay more attention to sunscreen.

Because there is a kind of ultraviolet light in the sun, ultraviolet rays will stimulate the melanin in the person**, so people will become black after a long time in the sun.

Because of melanin. The secretion of melanin is a kind of protection for the body to avoid the human body from being burned by the sun.

It will definitely turn dark, and it is still in the case of a lot of sun, although it is only sunned for a minute or two, but this minute or two is not to be underestimated, and many times it looks like there is no sun, but ultraviolet rays are still harming our skin, so it is recommended to go out or take sunscreen measures.

Yes, it is often only a few minutes in the sun, and it will turn dark after a long time. This is because sun exposure causes the melanocytes in the cell to produce more melanin, which protects them from UV rays. Melanin is a natural pigment that absorbs ultraviolet rays from sunlight and converts them into heat, rather than harmful ultraviolet rays.

As a result, it darkens after sun exposure. However, melanin is not always beneficial. Excess melanin can lead to hyperpigmentation, which can make it look uneven and may even lead to cancer.

Therefore, it is important to take care to protect ** from the sun, especially when exposed to the sun for a long time.

It will definitely turn dark, and it is still in the case of a lot of sun, although it is only a minute or two, but this minute or two is not to be underestimated, and many times it looks like there is no sun, but ultraviolet rays are still harming our skin, so it is recommended to go out or take sunscreen measures.

.As you said, it won't. If you don't like getting darker, just pay attention to sun protection when you go out. There is no need to worry about getting dark in a short period of time. This is also the normal sun exposure of the human body, which is good for health.

Yes, ultraviolet rays, even in winter, you can touch sunscreen, I don't wear sunscreen in winter, I will get dark, but I usually get a red tan, and the tanning will be fine after a few days, I used to stay in the steam room for about 20 minutes after tanning.

(v) Well......Look at whether your ** is sun-resistant (hehe, just kidding), but a minute or two will not have much impact, ** will not sunburn, and you don't have to worry too much, one winter, and it will be white again......

It is unavoidable to go out in the summer, go out to do a good job of sun protection, and repair it after the sun, I think the ultraviolet rays are stronger in summer, or to avoid the sun.

Yes, landlords don't know that UV damage can be cumulative.

After returning home, you can put the sun-dried ** on 、、、 ice

Long-term sun exposure will make people's ** blacken, all of which are blackened by ultraviolet radiation, girls can bring a sun umbrella when they go out for fear of tanning, so that they can cover the exposure of ultraviolet rays and not become dark.