retinol
noun
ret·i·nol
ˈre-tə-ˌnȯl 
-ˌnōl
-ˌnōl
: the chief and typical vitamin A C20H29OH that is a highly unsaturated alicyclic alcohol used in various forms in medicine and nutrition
Examples of retinol in a Sentence
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It’s formulated with the likes of peptides, squalane, glycerin, vitamin B3, retinol, and the brand’s proprietary TruFirm complex.
—
Tamim Alnuweiri, InStyle, 31 Dec. 2025
This rich, retinol-alternative formula is ideal for dry or reactive skin.
—Alanna Martine Kilkeary, Glamour, 29 Dec. 2025
Damp skin absorbs retinol too quickly, which increases the risk of irritation.
—Zia Sherrell, Health, 26 Dec. 2025
Take The Inkey List’s new Starter Retinol Serum, which features encapsulated retinol.
—Jacqueline Kilikita, Refinery29, 24 Dec. 2025
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Tamim Alnuweiri, InStyle, 31 Dec. 2025
This rich, retinol-alternative formula is ideal for dry or reactive skin.
—Alanna Martine Kilkeary, Glamour, 29 Dec. 2025
Damp skin absorbs retinol too quickly, which increases the risk of irritation.
—Zia Sherrell, Health, 26 Dec. 2025
Take The Inkey List’s new Starter Retinol Serum, which features encapsulated retinol.
—Jacqueline Kilikita, Refinery29, 24 Dec. 2025
See All Example Sentences for retinol
Cite this Entry
“Retinol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/retinol. Accessed 5 Jan. 2026.
Copy CitationKids Definition
retinol
noun
ret·i·nol
ˈret-ᵊn-ˌȯl
-ˌōl
: the most common form of vitamin A
Medical Definition
retinol
noun
ret·i·nol
ˈret-ᵊn-ˌȯl
-ˌōl
-ˌōl
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