Do you know how to choose the right sunscreen?

Precautions for sun protection: Do you know how to choose a suitable sunscreen? If you want to become whiter, you must first learn how to protect yourself from the sun correctly.

Sun protection precautions

What do you mean there is still a long way to go?

The days can be long.

But, only today belongs to us.

The article is a bit long, here is the reading index:

1. Basic knowledge of sun protection

2. How to choose a sunscreen that suits your skin type?

3. Sunscreen recommendation

4. Use of sunscreen

5. Do I need to remove my makeup?

1. Tips on sun protection

What exactly does sunscreen protect against?

The main function of sunscreen products is to protect the skin from damage caused by UVA and UVB rays.

UVB is medium-wave ultraviolet light, which can cause sunburn and redness of the skin in a short period of time.

UVB is particularly strong in the summer and in the afternoon.

UVA is a long-wave ultraviolet ray with strong penetrability. It can directly reach the dermis of the skin and destroy elastic fibers and collagen fibers, thus causing wrinkles and fine lines, accelerating skin aging.

In the energy distribution of ultraviolet rays in sunlight, UVA is 15 times that of UVB and is the main cause of skin tanning. It can reduce the content of hyaluronic acid that binds water in the skin, making the skin dry, accelerating the formation of melanin, and darkening the skin color. It is also an important cause of skin cancer.

The intensity of UVA has nothing to do with the season, so sun protection is necessary in autumn and winter as well.

What do SPF and PA mean?

When buying sunscreen, there will usually be two items "SPF" and "PA" on the packaging, which are actually the protection capabilities against UVB and UVA, the two main culprits of tanning.

SPF corresponds to the protection against UVB. The larger the value, the longer it delays sunburn.

For example, if your skin turns red after 10 minutes of exposure to the sun, after applying SPF50+ sunscreen, it means it will take 10×50=500 minutes for the skin to turn red. Of course, this time limit will be shortened by factors such as sweating, so you need to reapply the sunscreen from time to time. In addition, the higher the SPF value, the better it is not necessarily. The higher the SPF value, the greater the burden on the skin.

PA corresponds to the protection of UVA.

The corresponding meanings of the PA value index are as follows:

PA value: effective protection time

PA+: About 4 hours

PA++: About 8 hours

PA+++: Super strong protection

PS: The absence of PA does not mean that it does not protect against UVA. European and American sunscreens basically do not have PA marked on them. European sunscreens are UVA★★ (the more stars, the higher the SPF).

Therefore, if you want to whiten your skin, you should pay special attention to sun protection. Those female celebrities with glowing white skin actually do their best to protect themselves from the sun and dare not slack off at all.

When Fan Bingbing was recording "The Amazing Race 4", she wrapped herself up tightly for fear of getting tanned.

Last year, when Guli Nazha was recording the variety show "Flowers and Youth", she was called "Guli Nazha" because she frequently sprayed sunscreen.