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www.skincancer.org/skin-cancer-information/ask-the-experts/does-a-higher-spf-sunscreen-always-protect-your-skin-better

Q. Does a higher-SPF (sun protection factor) sunscreen always protect your skin better than a lower-SPF sunscreen? How high should I go? A.Sunscreens with a higher SPF should offer more protection from the sun's harmful ultraviolet (UV) radiation, which is linked to the vast majority of skin cancers, as well as premature ...

www.ewg.org/sunscreen/report/whats-wrong-with-high-spf

Theoretically, applying sunscreen with a sun protection factor – SPF – of 100 would allow beachgoers to bare their skin 100 times longer before suffering a sunburn. Someone who would normally redden after 30 minutes in the midday sun could stay out for 50 hours. But for high-SPF sunscreens, theory and reality are two ...

www.webmd.com/beauty/sun/high-spf-sunscreens-are-they-better

Nov 9, 2012 ... The SPF rating is a measure of the time it would take you to sunburn if you were not wearing sunscreen as opposed to the time it would take with sunscreen on. " SPF is not a consumer-friendly number," says Florida dermatologist James M. Spencer, MD. "It is logical for someone to think that an SPF of 30 is ...

www.bustle.com/articles/164390-what-is-the-highest-spf-available-the-answer-might-surprise-you

Jun 1, 2016 ... Generally, SPF 100 is the highest protection you can buy, but it's not necessarily the best protection against a sunburn. According to Penn State Prevention Research Center, proper and repeated application of sunscreen is more important than the SPF number. "Imagine that your skin normally begins to ...

www.businessinsider.com/do-high-spf-sunscreens-work-better-50-2017-5

May 31, 2017 ... In theory, sunscreen with super-high SPF should give you the best protection against damaging UV radiation. But in practice, it doesn't really work that way. At best, high-SPF sunscreens give you only slightly better protection than a sunscreen with SPF 50, according to the annual sunscreen report just ...

galtime.com/story/what-spf-should-i-use

An SPF of 15 screens 93 percent of UVB rays, while a 30 screens 97 — just four percent more. “UVB protection does not increase proportionally with the SPF number,” says Dr. Elizabeth Hale of the Skin Cancer Foundation. There's a large jump between an SPF of 2, which protects against 50 percent of UVB rays, and 15, ...

health.howstuffworks.com/skin-care/beauty/sun-care/spf.htm

This summer, sunscreens with SPF 70 hit the market. The fair-skinned of the world might be tempted to take this as an open invitation to slather some on, jump onto a lounge chair and bake for 12 hours without getting burned. The higher the number, the better, right? Before you throw caution to the wind, though, you should ...

www.nytimes.com/2009/05/14/fashion/14SKIN.html?pagewanted=all

May 13, 2009 ... The SPF arms race is leading some dermatologists to complain that this is merely a numbers game that confuses consumers.

www.healthguidance.org/entry/16485/1/Is-SPF-100-Sunscreen-Twice-as-Good-as-SPF-50.html

Given concerns over the link between overexposure to the sun and skin cancer, it is normal for people to seek the best possible protection from the sun's rays. One of the ways to judge the effectiveness of a sunscreen or suntan lotion is by the sun protection factor (SPF) rating listed on its label. In theory, the higher the SPF  ...