Definition of SPF

sun protection factor
Medical Dictionary


noun \ˌes-(ˌ)pē-ˈef\

Medical Definition of SPF

:  a number assigned to a sunscreen that is the factor by which the time required for unprotected skin to become sunburned is increased when the sunscreen is used—called also sun protection factor


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July 05, 2015
bunkum Hear it
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