: any of various mucoproteins that occur especially in secretions of mucous membranes
Examples of mucin in a Sentence
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Bring hydration to your pores with these beauty finds that are all marked down for Labor Day, like a snail mucin sheet mask and a face powder that one PEOPLE staffer swears by.
—
Nicol Natale, People.com, 27 Aug. 2025
The formula is a whopping 81% prickly pear mucin, derived from both the prickly pear cactus stem (a source of skin barrier-supporting hydration) and the antioxidant-rich fruit.
—Karina Hoshikawa, Refinery29, 26 Aug. 2025
Vogue’s Guide to the Best Korean Face Masks Korean face masks, often featuring ingredients novel to American customers such as snail mucin and egg whites, have been in high demand, which has led to entirely new varieties.
—Deanna Pai, Vogue, 12 Aug. 2025
But while the brand may be responsible for popularizing the ingredient in the 21st century, snail mucin was introduced to the beauty world decades before.
—Kaleigh Werner, Footwear News, 1 July 2025
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Nicol Natale, People.com, 27 Aug. 2025
The formula is a whopping 81% prickly pear mucin, derived from both the prickly pear cactus stem (a source of skin barrier-supporting hydration) and the antioxidant-rich fruit.
—Karina Hoshikawa, Refinery29, 26 Aug. 2025
Vogue’s Guide to the Best Korean Face Masks Korean face masks, often featuring ingredients novel to American customers such as snail mucin and egg whites, have been in high demand, which has led to entirely new varieties.
—Deanna Pai, Vogue, 12 Aug. 2025
But while the brand may be responsible for popularizing the ingredient in the 21st century, snail mucin was introduced to the beauty world decades before.
—Kaleigh Werner, Footwear News, 1 July 2025
See All Example Sentences for mucin
Cite this Entry
“Mucin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mucin. Accessed 9 Oct. 2025.
Copy CitationMedical Definition
mucin
noun
mu·cin
ˈmyüs-ᵊn 
: any of a group of mucoproteins that are found in various human and animal secretions and tissues (as in saliva, the lining of the stomach, and the skin) and that are white or yellowish powders when dry and viscid when moist
gastric mucin
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