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
Apply sunscreen with a sun protection factor (SPF) of at least 30 every day, even on cloudy days.
—
Sarah Bradley, Health, 20 June 2025
Every bottle is labeled with an SPF or sun protection factor.
—Laura Baisas, Popular Science, 22 May 2025
Use a broad-spectrum, water-resistant sunscreen with a sun protection factor (SPF) of 30 or higher.
—Mark Gurarie, Verywell Health, 14 May 2025
Pick a broad-spectrum sunscreen with a sun protection factor (SPF) of at least 30.10
4.
—Carrie Madormo, Rn, Mph, Verywell Health, 30 Apr. 2025
See All Example Sentences for sun protection factor
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Sarah Bradley, Health, 20 June 2025
Every bottle is labeled with an SPF or sun protection factor.
—Laura Baisas, Popular Science, 22 May 2025
Use a broad-spectrum, water-resistant sunscreen with a sun protection factor (SPF) of 30 or higher.
—Mark Gurarie, Verywell Health, 14 May 2025
Pick a broad-spectrum sunscreen with a sun protection factor (SPF) of at least 30.10
4.
—Carrie Madormo, Rn, Mph, Verywell Health, 30 Apr. 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 25 Jul. 2025.
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