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

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

    Dr. Linkner: The most important part of a sunscreen label is the SPF or the sun protection factor level which gives you the interval time frame of which the sunscreen will prevent you from ...

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

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    For example, SPF 50 stops 98% of UVB rays, while SPF 100 blocks 99% of them. No sunscreen provides 100% protection from damaging UV rays. ... “Above that can be helpful but the really profound ...

  4. 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.

  5. 19 Best Drugstore Sunscreens to Protect Your Face From ... - AOL

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    Alba Botanica Face Broad Spectrum SPF 50 is enriched with niacinamide, squalane, and vitamin E to nourish and prevent inflammation from UV exposure. Type: Lotion Skin type: Normal, dry, oily ...

  6. 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%).

  7. Ultraviolet index - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet_index

    Reduce time in the sun between 10 a.m. and 4 p.m. If outdoors, seek shade and wear sun-protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 50+ sunscreen every 1.5 hours, even on cloudy days, and after swimming or sweating. Bright surfaces, such as sand, water, and snow, will increase UV exposure.

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