sun protection factor
noun
: 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
—abbreviation SPF
Examples of sun protection factor in a Sentence
Recent Examples on the Web
Both variants had a sun protection factor (SPF) of around 30, while also minimizing skin cell damage and inflammation.
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Andrew Paul, Popular Science, 4 Sep. 2025
While formulations vary, the general rule is to select a broad-spectrum shield with a sun protection factor (SPF) of 30.
—Khanh T.l. Tran, USA Today, 29 Aug. 2025
Wear a broad-spectrum sunscreen with a sun protection factor of 30 or higher and reapply as necessary, at least every two hours.
—Angelica Bottaro, Verywell Health, 25 July 2025
This could be because olive oil only has a sun protection factor (SPF) of about 8.
—Monica Cull, Discover Magazine, 22 July 2025
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Andrew Paul, Popular Science, 4 Sep. 2025
While formulations vary, the general rule is to select a broad-spectrum shield with a sun protection factor (SPF) of 30.
—Khanh T.l. Tran, USA Today, 29 Aug. 2025
Wear a broad-spectrum sunscreen with a sun protection factor of 30 or higher and reapply as necessary, at least every two hours.
—Angelica Bottaro, Verywell Health, 25 July 2025
This could be because olive oil only has a sun protection factor (SPF) of about 8.
—Monica Cull, Discover Magazine, 22 July 2025
See All Example Sentences for sun protection factor
Cite this Entry
“Sun protection factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sun%20protection%20factor. Accessed 9 Sep. 2025.
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