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
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Active ingredients: Iron oxides, niacinamide, vitamin E | SPF: 30 | Size: 0.35 oz.
—
Brigitt Earley, Glamour, 23 July 2025
In addition to barrier-repairing ceramides, the formula includes salicylic acid to clear pores and gently exfoliate, as well as hyaluronic acid and niacinamide to deeply hydrate, soothe, and strengthen the skin.
—Christa Joanna Lee, Allure, 20 July 2025
Whereas, those with oily or breakout-prone skin types might appreciate a niacinamide serum—a great anti-aging option to minimize pore size, reduce inflammation, and regulate sebum production.
—Christian Allaire, Vogue, 17 July 2025
Ceramides help maintain your skin’s natural barrier, niacinamide works to calm and smooth uneven texture, and hyaluronic acid delivers a healthy dose of hydration that lasts all day.
—Alexandra Emanuelli, Southern Living, 25 June 2025
See All Example Sentences for niacinamide
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Brigitt Earley, Glamour, 23 July 2025
In addition to barrier-repairing ceramides, the formula includes salicylic acid to clear pores and gently exfoliate, as well as hyaluronic acid and niacinamide to deeply hydrate, soothe, and strengthen the skin.
—Christa Joanna Lee, Allure, 20 July 2025
Whereas, those with oily or breakout-prone skin types might appreciate a niacinamide serum—a great anti-aging option to minimize pore size, reduce inflammation, and regulate sebum production.
—Christian Allaire, Vogue, 17 July 2025
Ceramides help maintain your skin’s natural barrier, niacinamide works to calm and smooth uneven texture, and hyaluronic acid delivers a healthy dose of hydration that lasts all day.
—Alexandra Emanuelli, Southern Living, 25 June 2025
See All Example Sentences for niacinamide
Cite this Entry
“Niacinamide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/niacinamide. Accessed 29 Jul. 2025.
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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