Now that summer has begun, it's the critical moment of the annual sun protection. Some people feel that they don't need sunscreen in spring, and the sun is not strong, but they don't expect that their skin will quietly darken before they enter summer. Some people are obviously wearing sun-protective clothing and sun hats, why are they still tanned?
Who is the culprit who makes us black? Can it be white back after it turns black? How to effectively protect from the sun?
We all know that if you want to avoid tanning, staying indoors and going out less is the most effective way to protect yourself from the sun. The main reason we tan is that the skin is exposed to the outdoors for a long time and absorbs a lot of UV rays.
Ultraviolet light stimulates the melanocytes at the base of the skin, causing them to quickly activate and shuttle through the epidermal cells. These active melanocytes move melanin proteins through layers of cellular metabolism and transfer them to keratinocytes.
The more melanin protein is transferred to keratinocytes, the darker the complexion. After 2 to 3 days of activity and precipitation, the skin will turn from white to red and eventually dark.
Sun protection isn't just limited to a specific season, it's a skincare routine that needs to be done throughout the year.
In spring and autumn, although the sun is not as strong as in summer, UV rays still pose a certain threat. Especially on a clear day, UV radiation can still cause damage to the skin.
In summer, the sun is strong, the amount of ultraviolet radiation is high, and people are more vulnerable to ultraviolet rays because they wear lighter clothes and have a larger exposed skin area.
Although the sun is milder in winter, ultraviolet rays are still present, especially in the middle of the day. So take sun protection all year round.
We can choose a sunscreen with an SPF value of 30 or above and make sure that it has PA+ or higher UVA protection. Apply sunscreen half an hour before going outside the house to make sure it absorbs well and forms a protective layer.
We want to choose sunscreens that suit our skin type and needs, and try to choose physical sunscreens, as they are generally safer and gentler.
Usually between 10 a.m. and 4 p.m. is the sunniest time, so you must go outside, so try to stay in the shade or use umbrellas, hats and other items to block the sun.
For large areas of the body, such as the back or areas that are difficult to apply, a sunscreen spray can be used to easily cover.
If you accidentally get a tan, don't worry, we'll automatically come back after a while. Human skin has a certain self-healing ability, and over time, subcutaneous melanocytes will be metabolized and excreted with aging cells, so the skin will gradually return to its original complexion.
To sum up, sunscreen can be summed up as the ABC principle, Void does not go out, does not bask in the sun, blocks physical sunscreen such as umbrellas and clothes, and uses sunscreen chemical sunscreen for cream.
Source: Comprehensive Network, if there is any infringement, please contact to delete.