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
Beyond the capixyl, the formula includes hyaluronic acid, biotin, and niacinamide to keep your scalp calm, hydrated, and thriving, so your hair can live its best, fullest life, as Allure puts it.
—
Miami Herald, 26 Mar. 2026
It’s infused with shine-enhancing vitamin B5 and strengthening biotin and coconut oil, for beautiful bounce that mimics a salon blowout.
—Lily Wohlner, Allure, 25 Mar. 2026
The B vitamin, while often touted as a hair growth miracle, has little scientific evidence to support this notion; that said, biotin has been shown to add hydration to dry hair, leaving it bouncy, shiny, and soft.
—Sophie Wirt, InStyle, 26 Feb. 2026
This pick is infused with biotin and amino acids to prevent breakage and fortify strands.
—Jamie Wilson, Glamour, 20 Feb. 2026
See All Example Sentences for biotin
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Miami Herald, 26 Mar. 2026
It’s infused with shine-enhancing vitamin B5 and strengthening biotin and coconut oil, for beautiful bounce that mimics a salon blowout.
—Lily Wohlner, Allure, 25 Mar. 2026
The B vitamin, while often touted as a hair growth miracle, has little scientific evidence to support this notion; that said, biotin has been shown to add hydration to dry hair, leaving it bouncy, shiny, and soft.
—Sophie Wirt, InStyle, 26 Feb. 2026
This pick is infused with biotin and amino acids to prevent breakage and fortify strands.
—Jamie Wilson, Glamour, 20 Feb. 2026
See All Example Sentences for biotin
Cite this Entry
“Biotin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biotin. Accessed 27 Mar. 2026.
Copy CitationKids 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
Love words? Need even more definitions?
Merriam-Webster unabridged
