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

Reach for these bio-cellulose undereye patches that help to minimize unwanted signs of fatigue—thanks to a combination of caffeine, niacinamide, and hyaluronic acid. —Ana Escalante, Glamour, 28 Aug. 2025

Formulated without any exfoliants or drying ingredients, this cleanser can regulate sebum (your skin’s oil) production with niacinamide. —Jessica Kasparian, SELF, 22 Aug. 2025

That’s where CoverGirl’s Simply Ageless Triple Action Concealer comes in handy because it’s packed with hydrating hyaluronic acid, plus vitamin C and niacinamide to hydrate, brighten, and smooth extra delicate mature undereyes. —Allure, 8 Aug. 2025

The overnight mask uses four key ingredients to help produce a glowy complexion, including ceramide NP for hydration, collagen extract to assist with skin elasticity, adenosine to minimize fine lines, and niacinamide, which helps even skin tone. —Rylee Johnston, People.com, 3 Aug. 2025

Word History

First Known Use

1942, in the meaning defined above

Rhymes for niacinamide

• acrylamide
• procainamide
• sulfonamide
• sulphonamide
• acetazolamide
• polyacrylamide
• amide
• nicotinamide
• sulfanilamide

Kids 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