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

It’s soaked in a soothing, brightening blend of niacinamide, glycerin, and copper peptides, which plump the skin with a powerful dose of hydration. —Justin Fenner, Robb Report, 13 June 2025

True to its name, this skin tint feels akin to a serum and is infused with serum-like ingredients, such as squalane, niacinamide, and hyaluronic acid for an absolutely radiant, glowing finish. —Sarah Han, Allure, 11 June 2025

If your skin is extremely dry and rough, however, the La Roche-Posay Body Moisturizer is rich in prebiotic thermal water, shea butter, and niacinamide is another one of Tookes’ recommendations. —India Espy-Jones, Essence, 2 June 2025

Of the best options out there, The Ordinary’s formula is fueled by 10% niacinamide plus 1% zinc to boosts brightness and smoothness in eight weeks. —Jenny Berg, Vogue, 13 June 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