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 wash is rich in niacinamide (which can rev up ceramide production for a stronger moisture barrier) and shea butter, which is packed with fatty acids that work together with the lipids in your skin to help your barrier function properly. —Ian Michael Crumm, Allure, 11 Dec. 2025

Hydrolyzed collagen keeps skin feeling firm and bouncy, while niacinamide strengthens your moisture barrier to lock in hydration. —Jeaneen Russell, PEOPLE, 5 Dec. 2025

The treatment pairs physical exfoliants like volcanic pumice and charcoal bamboo with chemical exfoliation from niacinamide to resurface the skin and help even skin tone. —Iman Balagam, Vogue, 4 Dec. 2025

Paired with Laduora’s 8Pepta Serum—a peptide-, hyaluronic-acid-, and niacinamide-rich formula included in the introductory kit—the routine becomes both targeted and sensorial. —Adam Hurly, Robb Report, 29 Nov. 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