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

This Best of Beauty Award winner pairs five molecular weights of hyaluronic acid with brightening niacinamide, calming aloe, antioxidant-rich green microalgae, and firming vegan peptides. — Christa Joanna Lee, Allure, 18 July 2026

Both formulas feature zinc oxide, niacinamide, and hyaluronic acid to provide physical sun protection, reduce redness and calm the complexion, and hydrate the skin. — Jessie Quinn, StyleCaster, 17 July 2026

The foundation is also infused with vitamin E, niacinamide, and Lactobacillus extract complex, which hydrate, as well as improve your skin’s tone and texture. — Izzy Baskette, PEOPLE, 16 July 2026

This filter-like foundation also has a blurring effect that’s hydrating and brightening, leaving my skin looking fresh and plump—which is thanks to the niacinamide, hyaluronic acid, and peptides infused into it. — Essence Wiley, InStyle, 14 July 2026

Word History

First Known Use

1942, in the meaning defined above

Rhymes for niacinamide

• acetazolamide
• polyacrylamide
• acrylamide
• cyanamide
• procainamide
• sulfonamide
• sulphonamide
• 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