niacinamide
noun
ni·a·cin·amide
ˌnī-ə-ˈsi-nə-ˌmīd 
: a compound C6H6N2O of the vitamin B complex found especially as a constituent of coenzymes and used similarly to niacin
called also nicotinamide
Examples of niacinamide in a Sentence
Recent Examples on the Web
Plus, glycerin, collagen, and niacinamide to tighten fine lines, improve firmness, and restore hydration, so the skin looks plump and supple.
—
Reece Andavolgyi,
InStyle,
3 July 2026
Enriched with zinc oxide, niacinamide, and vitamin E for a visibly smoother, more even complexion.
—
ABC News,
2 July 2026
Soothe parched skin with this lightweight moisturizer, which includes niacinamide and squalane to reduce moisture loss by protecting your skin barrier.
—
Sian Babish,
PEOPLE,
1 July 2026
Bestsellers include its Serum Body Washes, 5% AHA Deodorant Serums and Nourishing Body Oil — each formulated with ingredients such as niacinamide, squalane and glycolic acid.
—
Kathryn Hopkins,
Footwear News,
26 June 2026
See All Example Sentences for niacinamide
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Reece Andavolgyi,
InStyle,
3 July 2026
Enriched with zinc oxide, niacinamide, and vitamin E for a visibly smoother, more even complexion.
—
ABC News,
2 July 2026
Soothe parched skin with this lightweight moisturizer, which includes niacinamide and squalane to reduce moisture loss by protecting your skin barrier.
—
Sian Babish,
PEOPLE,
1 July 2026
Bestsellers include its Serum Body Washes, 5% AHA Deodorant Serums and Nourishing Body Oil — each formulated with ingredients such as niacinamide, squalane and glycolic acid.
—
Kathryn Hopkins,
Footwear News,
26 June 2026
See All Example Sentences for niacinamide
Cite this Entry
“Niacinamide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/niacinamide. Accessed 7 Jul. 2026.
Copy CitationKids Definition
niacinamide
noun
ni·a·cin·amide
ˌnī-ə-ˈsin-ə-ˌmīd
: a compound of the vitamin B complex that is used like niacin
Medical Definition
niacinamide
noun
ni·a·cin·amide
ˌnī-ə-ˈsin-ə-ˌmīd
: a bitter crystalline basic amide C6H6N2O that is a member of the vitamin B complex and is formed from and converted to niacin in the living organism, that occurs naturally usually as a constituent of coenzymes, and that is used similarly to niacin
called also nicotinamide
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