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Experts teach you how to use sunscreen cosmetics
summer, sunshine, love it for travel or outdoor activities, people, it is a matter of frown thing, especially the beauty of the female, the sun's ultraviolet rays on their delicate skin is nothing more than a brutal injury.
experts, so the skin will sunburn or tan, depending on two factors: First, and ultraviolet wavelength. ultraviolet can skin sunburn, UVA can make the skin tan. Second, and skin type. foreign researchers to the skin after sun exposure is divided into six types: Asians are generally type Ⅲ or Ⅳ-type skin, summer outdoor activities of women sunburn more easily with the children.
to be used in sunscreen cosmetics
experts said the choice of sunscreen cosmetics should first pay attention to the strength of SPF and PA, followed by water, perspiration resistance, addition is a stretch of good, After applying the same white skin, not greasy, waterproof, comfortable and natural.
in sunscreen cosmetics packaging, we often see a PA with SPF logo, which is the index of sunscreen sunscreen products. PA is a long-wave UV protection, are labeled PA + to + + +. PA + is inefficient protection, PA + + is the effective protection, PA + + + for the high level of protection. generally the skin in not rub sunscreen about 15 minutes later it tan sunburn, and a + = 2, so the PA + = 15t2 = 30, that is, smear identified as PA + sunscreen, the skin will tan sunburn after 30 minutes, so 30 minutes after the paint to be supplemented once.
SPF is called for is 8, in theory, it is time to protect the skin 20t8 = 160 minutes SPF15 sunscreen if you choose, you can stay in the sun 15 times, or 300 minutes, and so on. In fact, the human skin the sun's ultraviolet tolerance is due to people, because, vary the now internationally recognized: SPF value of 2 to 4 there is a minimum sun protection; 6 to 8 medium sun protection; 8 to 15 for the higher protective effect; greater than 15 for the full protection.
choose sunscreen cosmetics individual should follow the principle of sensitive skin and children, the low sensitivity of the product should be used; oily skin and easy to grow, should not be used to generate labeled acne products; often outdoor activities or outdoor workers should be selected anti-sweat sunscreen cosmetics; swimming or water sports should use waterproof products.
physical sunscreen sunscreen cosmetics and a two-pronged
experts say Summer 11 am to 3 pm the sun was the most intense period of time, is the strongest UV periods, should avoid outdoor activities. If you must go out, they should wear hats or use umbrellas to try to wear long-sleeved clothes. Experts say, in addition to clothing and equipment and other physical sun shade outside, spread evenly on the skin layer is undoubtedly the right sunscreen to the skin and put on a different SPF value of sunscreen in the indoor work of the staff or female can use SPF10 or so, PA + sunscreen cosmetics; of light-sensitive easy tanning or often in outdoor work activities of people, use SPF20 or so, PA + + sunscreen ; while walking in the sun or the beach swimming, you should choose water-resistant, anti-sweat is good, SPF30 around, PA + + + potent sunscreen.
stress
use sunscreen cosmetics experts say, a good sunscreen bad with two factors: First, cosmetics and sun protection provisions of the determination of the amount applied for. the same SPF value of sunscreen cosmetics applied sunscreen depends on the actual amount after applying sunscreen cosmetics do not go out immediately, preferably 20-30 minutes after and then go out, because sunscreen needs to form a protective film process and the second is the frequency of sunscreen cosmetics make up the paint. the effectiveness of sunscreen cosmetics there is a certain time-sensitive, easy summer sweat will wash away sunscreen every 2 to 3 hours to paint one up; if continuous sun exposure, you should be 60 to 90 minutes after re-apply once in the event of sunburn, apply cold wet towel or ice, and pain with some anti-itch medicine, if necessary, to the skin specialist treatment.
Source: 92 hanbok http://www.92hf.cn, the original address: http://www,beats by dre pro.92hf.cn/read.php?tid=940
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