根据美国食品和药物管理局(U.S. Food and Drug Administration)去年实施的规定,只有广谱防晒霜──能同时防范长波紫外线和中波紫外线─和防晒系数在15或以上的防晒霜才可以声称能够降低皮肤提前老化和皮肤癌风险。格林说,这两种紫外线都与光老化和癌症有关联。不能同时防护这两种紫外线或者防晒系数在2到14之间的防晒霜只能声称有助于防止晒伤。
The new rules also say that products claiming water resistance must say how long a user can expect to get that protection while swimming or sweating, either 40 minutes or 80 minutes. And sunscreens can no longer be called 'sunblocks' or be labeled as 'waterproof' or 'sweatproof.'
此外,根据新规定,声称具有防水效果的产品必须说明使用者游泳或出汗时防晒效果能保持多久,是40分钟还是80分钟。此外,防晒霜(sunscreen)不能再被称为“日光隔离霜”(sunblock),标签上也不能再单纯使用“防水”(waterproof)或“防汗”(sweatproof)等字眼。
Dr. Spencer recommends that people look for water-resistant, broad-spectrum products with an SPF of at least 30. 'Don't be shy about putting it on, ' he said. 'You're not getting the SPF on the bottle if you're putting it on too lightly.'
斯潘塞建议人们使用防晒指数至少为30的防水广谱产品。他说:“别怕抹防晒霜,如果你抹得太薄,就达不到瓶子上说的防晒指数。”
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