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2. We asked a dermatologist the most common questions about SPF ...

   www.aol.com/lifestyle/asked-dermatologist-most...

   As SPF levels increase beyond 50, the formulations tend to be thicker and leave a chalkier appearance, and most people will under compensate that white chalkiness by not utilizing the right amount ...

3. Dermatologists Say These Are The Best Sunscreens To Avoid ...

   www.aol.com/lifestyle/dermatologists-best...

   Physical Matte UV Defense SPF 50. Oily skin and enlarged pores go hand in hand, but luckily this 100 percent physical sunscreen tackles both to keep your skin smooth and shine-free all day long.

4. Does sunscreen expire? Should you wear it indoors ... - AOL

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   The AAD recommends using a broad-spectrum sunscreen — meaning it protects against both UVA rays (which prematurely age skin) and UVB rays (which cause sunburn) — with SPF 30 or higher.

5. Sunscreen - Wikipedia

   en.wikipedia.org/wiki/Sunscreen

   In the EU, sunscreen labels can only go up to SPF 50+ (initially listed as 30 but soon revised to 50). [73] Australia's Therapeutic Goods Administration increased the upper limit to 50+ in 2012. [74] [75] In its 2007 and 2011 draft rules, the US Food and Drug Administration (FDA) proposed a maximum SPF label of 50, to limit unrealistic claims.

6. How to choose the best sunscreen - AOL

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   SPF 15 blocks 93% of the sun's UVB rays, and increases incrementally from there as the SPF goes up (for example, SPF 30 blocks 97% of UV rays), according to the American Academy of Dermatology. No ...

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%).