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如何看懂防曬品的標示
我們對於紫外線造成的肌膚傷害愈來愈重視,哪大家又對防曬標示的認識有多少呢?
Yen告訴大家如何看懂防曬品的標示,從而選擇合適自已的防曬品。
SPF主要是對抗紫外線UVB,數字代表產品能延長肌膚在紫外線下不被曬紅的耐受倍數,而一般肌膚被曬紅的平均時間為10分鐘,例如SPF30的防曬產品就能延長10分鐘的30倍,即300分鐘後才會曬紅,所以SPF值愈高,防止曬紅的時間便愈長。
PA值是對抗UVA的防御力,PA值的+號愈多,代表抗UVA的能力愈高。
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