sun protection factor

noun

Definition of sun protection factor

: 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 The most important thing to look at on your sunscreen bottle is the SPF — or sun protection factor — which specifically refers to protection from UVB rays. Julie Ricevuto, Allure, "The Science of Beauty: The Complete Guide to Sunscreen," 15 Oct. 2020 There’s no question that sun protection factor (SPF) is one of the most important parts of any skincare routine; however, though much of our skincare and makeup has SPF in it, many eye creams do not. Popular Science, "Eye creams that target dark circles, fine lines, and dull skin," 3 Nov. 2019 The American Academy of Dermatology recommends applying a water-resistant broad-spectrum sunscreen with an SPF (sun protection factor) of 30 or higher. Heloise, Washington Post, "Hints From Heloise: Pop this balloon," 13 July 2019 Lotions, foams and sprays that prevent sunburn are tested at 2 milligrams per square centimeter of skin to determine the sun protection factor, or SPF. Jo Craven Mcginty, WSJ, "The Burning Question: How Much Sunscreen?," 29 June 2018 Choose sunscreen that is broad-spectrum (blocks UVB and UVA rays) with a sun protection factor (SPF) of at least 30. Katy Mullens, Md, USA TODAY, "Ask a Doc: How do I keep my newborn safe from the summer heat and sunshine?," 12 June 2018 Legitimate sunscreens are made in a wide range of sun protection factor values, also known as SPF values, and are over-the-counter drugs that come in many forms. NBC News, "Sunscreen pills are fake medicine, FDA says," 23 May 2018 Typically, the first line of business is to decide on your level of SPF, or sun protection factor. CNN Underscored, "Do your skin a favor with this top-rated sunscreen," 1 Nov. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sun protection factor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of sun protection factor

1968, in the meaning defined above

Keep scrolling for more

Learn More about sun protection factor

Time Traveler for sun protection factor

Time Traveler

The first known use of sun protection factor was in 1968

See more words from the same year

Statistics 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 24 Jan. 2021.

Keep scrolling for more

More Definitions for sun protection factor

sun protection factor

noun

Medical Definition of sun protection factor

: spf

Comments on sun protection factor

What made you want to look up sun protection factor? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Slippery Words Quiz—Changing with the Times

  • ducreux self portrait yawning
  • What is an earlier meaning of nice?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!