: a colorless crystalline growth vitamin C10H16N2O3S of the vitamin B complex found especially in yeast, liver, and egg yolk
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All of these products include nourishing ingredients such as avocado oil, biotin, agave nectar, and vitamins C, D, and E to repair bonds, remove buildup, and strengthen curls.
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Larry Stansbury, Essence, 11 Feb. 2025
Chia seed oil, hydrolyzed keratin, and biotin—found in this shampoo and its perfect match, OUAI Fine Hair Conditioner—strengthen the hair cuticle and bring dull strands back to life.
—Christa Joanna Lee, Allure, 9 Feb. 2025
Instant Shine Mask for $15: Infused with biotin, glycerin, hyaluronic acid, and red raspberry seed oil, this translucent, slightly viscous amber liquid purportedly seals the hair cuticle for a smooth and silky result.
—Louryn Strampe, WIRED, 2 Feb. 2025
The lightweight powder refreshes roots with a blend of peptides, biotin, and caffeine.
—Conçetta Ciarlo, Vogue, 1 Feb. 2025
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Larry Stansbury, Essence, 11 Feb. 2025
Chia seed oil, hydrolyzed keratin, and biotin—found in this shampoo and its perfect match, OUAI Fine Hair Conditioner—strengthen the hair cuticle and bring dull strands back to life.
—Christa Joanna Lee, Allure, 9 Feb. 2025
Instant Shine Mask for $15: Infused with biotin, glycerin, hyaluronic acid, and red raspberry seed oil, this translucent, slightly viscous amber liquid purportedly seals the hair cuticle for a smooth and silky result.
—Louryn Strampe, WIRED, 2 Feb. 2025
The lightweight powder refreshes roots with a blend of peptides, biotin, and caffeine.
—Conçetta Ciarlo, Vogue, 1 Feb. 2025
See All Example Sentences for biotin
Cite this Entry
“Biotin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biotin. Accessed 3 Mar. 2025.
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
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