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
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What’s more fascinating is that, unlike LED light therapy, this laser works over sun protection factor (SPF) or makeup without (supposedly) losing efficacy.
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Julian Chokkattu, Wired News, 19 Apr. 2025
Wear sunscreen with a sun protection factor (SPF) of at least 30.
—Casey Gallagher, Health, 15 Apr. 2025
The higher the sun protection factor number, the higher percentage of UVB rays are blocked.
—Catharine Malzahn, Glamour, 11 Apr. 2025
Daily use of broad-spectrum sunscreens with a sun protection factor (SPF) of at least 30 can help protect against sun damage.1
2.
—Ann Pietrangelo, Verywell Health, 27 Mar. 2025
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Julian Chokkattu, Wired News, 19 Apr. 2025
Wear sunscreen with a sun protection factor (SPF) of at least 30.
—Casey Gallagher, Health, 15 Apr. 2025
The higher the sun protection factor number, the higher percentage of UVB rays are blocked.
—Catharine Malzahn, Glamour, 11 Apr. 2025
Daily use of broad-spectrum sunscreens with a sun protection factor (SPF) of at least 30 can help protect against sun damage.1
2.
—Ann Pietrangelo, Verywell Health, 27 Mar. 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 1 May. 2025.
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