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2. I’ve Tested Basically Every Drugstore Sunscreen, and These ...

   www.aol.com/lifestyle/ive-tested-basically-every...

   Whatever type of drugstore sunscreen you choose, it should have a sun protection factor (SPF) of 30 or more, says Dr. Maiman. Sunscreen with SPF 30 blocks 97 percent of the sun's rays , and those ...

3. GoodGuide Sunscreen Ratings: the Winners and Losers - AOL

   www.aol.com/news/2011-05-14-goodguide-sunscreen...

   Kinesys SPF 30 Sun Protection Stick outscored all the other sunscreens as rated by GoodGuide, while Playtex's BioSun Maximum Sunblock Lotion, SPF 45 was rated worst. ... ethical products based on ...

4. How to choose the best sunscreen - AOL

   www.aol.com/news/choose-best-sunscreen-205950421...

   Sun protection factor. SPF, or sun protection factor measures your level of protection against a sunburn. ... It also has a 4.6-average star rating from over 2,400 reviews on Amazon.

5. Sunscreen - Wikipedia

   en.wikipedia.org/wiki/Sunscreen

   The sun protection factor (SPF rating, introduced in 1974) is a measure of the fraction of sunburn-producing UV rays that reach the skin. For example, "SPF 15" means that 1 ⁄ 15 of the burning radiation will reach the skin, assuming sunscreen is applied evenly at a thick dosage of 2 milligrams per square centimeter [68] (mg/cm 2). It is ...

6. The best sunscreens dermatologists use

   www.aol.com/lifestyle/best-sunscreens-summer...

   Whether you're looking for a sunscreen that's kid and baby safe, or want something free of chemicals for your sensitive skin, mineral sunscreens are the way to go. Dr. Magovern recommends La Roche ...

7. Sun protective clothing - Wikipedia

   en.wikipedia.org/wiki/Sun_protective_clothing

   UPF (ultraviolet protection factor) represents the ratio of sunburn-causing UV without and with the protection of the fabric, similar to SPF (sun protection factor) ratings for sunscreen. While standard summer fabrics have UPF ~6, sun protective clothing typically has UPF ~30, which means that only 1 out of ~30 units of UV will pass through (~3%).