biotin

noun

bi·​o·​tin ˈbī-ə-tən 

: a colorless crystalline growth vitamin C₁₀H₁₆N₂O₃S of the vitamin B complex found especially in yeast, liver, and egg yolk

Examples of biotin in a Sentence

Recent Examples on the Web

The formula is designed to deliver dramatic volume and length in just one coat, and it’s infused with hydrolyzed collagen, biotin, and peptides to strengthen the lashes. — Jenny Berg, Vogue, 11 Nov. 2026

The Thickening Therapy Collection delivers instant volume and is packed with vegan collagen and biotin to support thicker, fuller-looking hair. — ABC News, 2 Nov. 2026

OGx Thick & Full with biotin and collagen Writing for Yahoo Shopping, Jennifer Romolini named the Ogx Thick & Full Shampoo with Biotin & Collagen her top pick at this price point. — Lauren Jarvis-Gibson, Kansas City Star, 21 Oct. 2026

The lightweight scalp spray features rosemary oil, caffeine, and biotin, which are all ingredients commonly found in formulas to support scalp health and promote hair growth. — Vivien Lee, PEOPLE, 19 Oct. 2026

Word History

Etymology

International Scientific Vocabulary, from Greek biotos life, sustenance; akin to Greek bios

First Known Use

1936, in the meaning defined above

Kids Definition

biotin

noun

bi·​o·​tin ˈbī-ə-tən 

: a growth vitamin of the vitamin B complex found especially in yeast, liver, and egg yolk

Medical Definition

biotin

noun

bi·​o·​tin ˈbī-ət-ən 

: a colorless crystalline growth vitamin C₁₀H₁₆N₂O₃S of the vitamin B complex found especially in yeast, liver, and egg yolk

called also vitamin H