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 Sunscreen: To protect your skin from sun damage, finish your morning skin care routine by applying a broad-spectrum sunscreen with a sun protection factor (SPF) of 30 or higher. Lindsay Curtis, Verywell Health, 13 Sep. 2024 Cream foundation and the importance of SPF (sun protection factor). Renan Botelho, WWD, 7 Aug. 2024 Apply a broad-spectrum, water-resistant sunscreen with a sun protection factor (SPF) of 30 or higher to protect against overexposure to ultraviolet A (UVA) and ultraviolet B (UVB) rays. Anna Giorgi, Verywell Health, 24 July 2024 Since homemade sunscreens are not subject to the same rigorous testing and regulation as commercial products, their sun protection factor (SPF) and broad-spectrum protection cannot be verified. Alyssa Hui, Verywell Health, 22 July 2024 See all Example Sentences for sun protection factor 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sun protection factor.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1968, in the meaning defined above

Time Traveler
The first known use of sun protection factor was in 1968

Dictionary Entries Near sun protection factor

sunproof

sun protection factor

sunray

Cite this Entry

“Sun protection factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sun%20protection%20factor. Accessed 31 Oct. 2024.

Medical Definition

sun protection factor

noun
: spf
Last Updated: - Updated example sentences
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