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防晒霜为什么能够防晒
夏天,光照强烈,人们在户外活动的时候,为了避免被太阳晒伤,常常在皮肤上涂抹一些防晒霜。为什么防晒霜能够防晒呢?我们知道,太阳光不仅包括可见光,还包括波长低于可见光的紫外线。紫外线有杀菌消毒的作用,有益于健康。但是过度的紫外线照射会使皮肤灼伤变黑、起皱纹,并有可能导致皮肤癌。防晒霜..
时间:2021-03-15
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你有正确使用防晒霜吗 Did You Use Sun Cream In the Right Way
When summer comes, every girl will paste sun cream, in the purpose of protecting their skin. It is said that the one who has the red or blond hair and the white skin has more chances to get skin cancer if the person is exposed in the sun for a long time. Using sun cream in the ri..
时间:2021-03-27