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Use Sunscreen the Right Way

正确使用防晒霜

Survey respondents said they were aware that sunscreens with higher SPF afforded greater protection, and sunscreens past their expiration dates should not be used.

被调查者称，他们知道SPF值更高的防晒霜能提供更多保护，而且不能使用已过保质期的防晒霜。

Day reiterated that sunscreen with an SPF 15 or greater should be applied an ounce at a time before going into the sun and reapplied about hourly in order to gain the most protection from cancer-causing ultraviolet UVA and UVB rays.

戴伊反复强调说，SPF15及以上的防晒霜最好在出门前就使用约一盎司的量，暴露在太阳下后，大约每隔一小时再补涂一些，这样才能最好地达到隔离会致癌的紫外线---UVA和UVB。

"You need to go through sunscreen," Day said. "One bottle should not last a summer."

“防晒霜需要持续使用，”戴伊说，“一个夏天不应该只用一瓶。”

According to the American Cancer Society, more than 1 million skin cancers are diagnosed each year in the United States. Melanoma is on the rise, especially among young women. And the Skin Cancer Foundation reported that 90 percent of nonmelanoma skin cancer and premature aging have been linked to sun exposure.

据美国癌症协会报告，在美国，每年有超过一百万人被确诊患有皮肤癌。黑素瘤（小编注：死亡率最高的一种皮肤癌）患者越来越多，尤其在年轻女性之中。皮肤癌基金会报告说，90%的非黑素瘤皮肤癌和过早发病都与日晒有关。