Скачать или смотреть What Does SPF Mean?

Sunscreen comes in different levels of SPF, or sun protection factor, but what does that mean for your skin and the ultraviolet radiation hitting it? Olivia explains the science of SPF.

Hosted by: Oliva Gordon
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https://healthcare.utah.edu/healthfee...
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http://time.com/3924609/sunscreen-spf...