Sandbox:Sara: Difference between revisions

Revision as of 17:48, 1 August 2019

Measurement of UV protection afforded by sunscreens and clothing
Measurement system	SPF (Sun protection factor)	UVA‐PF (UVA‐protection factor)	UPF (Ultraviolet protection factor)
Definition
Developed for	Sunscreens	Sunscreens	Clothing
Global acceptance	International	United States only	International
UV wavelengths protected	UVB	UVA	UVA, UVB
Examples	SPF 2 protects against 50% of UVB SPF 8 protects against 88% of UVB SPF 15 protects against 93% of UVB SPF 30 protects against 97% of UVB SPF 50 protects against 98% of UVB	UVA‐PF1 protects against 20–39% of UVA UVA‐PF2 protects against 40–69% of UVA UVA‐PF3 protects against 70–95% of UVA UVA‐PF4 protects against >95% of UVA	UPF cotton 5–10 UPF denim 1700

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sara Mohsin, M.D.[2]

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 * Sunscreens
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+* Clothing
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 |style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |'''Global acceptance'''
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 * United States only
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+* International
 |-
 |style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |'''UV wavelengths protected'''
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 * UVA
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+* UVA, UVB
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 |style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |'''Examples'''
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 * UVA‐PF4 protects against >95% of UVA
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+* UPF cotton 5–10
+* UPF denim 1700
 |}
 {{CMG}}; {{AE}} {{S.M.}}