How to Use keratin in a Sentence

keratin

noun

• As the feathers grow, the keratin keeps a record of the bird’s diet, much like the rings of a tree.
  — New York Times, 21 Mar. 2018
• Horns are made of keratin — the same protein in our nails and hair.
  — Jane Alexiadis, The Mercury News, 26 Jan. 2017
• Half the head is bone, half is covered with hide and keratin.
  — WIRED, 26 Aug. 2023
• The horns are made of sheaths of keratin, like true horns, but shed every year like a true antler.
  — Matt Wyatt, ExpressNews.com, 13 Feb. 2020
• Six of the seven species have hard shells fused to their ribs and overlaid with keratin scutes.
  — National Geographic, 10 Oct. 2019
• Polyvinyl pyrrolidone sticks to the keratin in hair shafts and, like isopentane, makes the hairs stand up straight for a clean shave.
  — Wired Staff, WIRED, 1 Nov. 2006
• These parts are composed of keratin, the same tissue that makes up hair, skin, and nails.
  — Laura Baisas, Popular Science, 24 May 2023
• Once applied, the ink reacts with the proteins and keratin in the skin, and darkens over 24-36 hours.
  — Anna Tingley, Variety, 24 Oct. 2023
• It’s made of keratin—the same protein our fingernails and hair are made of.
  — National Geographic, 26 June 2016
• With a keratin lash lift, more protein is added back into the lash, Imani says.
  — Sara Spruch-Feiner, Town & Country, 7 Mar. 2020
• Baleen–or whalebone–is a hard substance made up of keratin.
  — Laura Baisas, Popular Science, 21 Feb. 2024
• Salon keratin treatments often claim to be free of the f-word too.
  — Olivia Fleming & Jenna Rosenstein, Harper's BAZAAR, 12 Aug. 2019
• Its scales are made of keratin and are ground up to use in traditional medicines.
  — Washington Post, 23 July 2019
• The grays are baleen whales that have sheets of keratin, a substance like fingernails, instead of teeth.
  — Phil Diehl, sandiegouniontribune.com, 9 Aug. 2017
• Bird feathers, like human hair and nails, are made of a protein called keratin.
  — New York Times, 21 Mar. 2018
• Its scales are made of keratin and are used in traditional medicines.
  — Fox News, 23 July 2019
• And in nail strengtheners, formaldehyde is supposed to bond with the nail’s keratin.
  — Marci Robin, Allure, 29 Jan. 2024
• Living animals tend to have tails with weapons that are made of keratin, like the quills of a porcupine or the scales of a pangolin.
  — Nicholas St. Fleur, New York Times, 16 Jan. 2018
• The cause: These random build-ups of keratin, which looks like a pimple under the skin, pop up on areas of the body with a high volume of oil glands.
  — Women's Health, 2 May 2023
• It’s made with a blend of rice, keratin amino acids, and enzymes to strengthen and nourish hair, while helping to keep curls defined.
  — Kayla Greaves, Vogue, 3 May 2024
• Demand for its pinecone-ish scales, made of keratin, like fingernails, has soared in China, where they are used in medicines.
  — Dionne Searcey, New York Times, 25 Jan. 2018
• As for the whale’s bristly baleen, these fibers and plates are flexible and resistant to fracture thanks to high levels of keratin.
  — Sarah Keartes, National Geographic, 30 July 2019
• Much of its strength comes from a material called keratin.
  — Svenja Lohner, Scientific American, 28 Nov. 2019
• Eating and preening helps keep the keratin trimmed and the bird’s beak in the proper shape, but a little extra filing can be helpful.
  — Joan Morris, The Mercury News, 6 Sep. 2019
• While oils and butters are a good call for damaged hair, so are protein, keratin, hyaluronic acid, and ceramides.
  — Sharon Brandwein, Southern Living, 8 Aug. 2024
• Pangolin scales are made of nothing more than keratin, a protein that makes up fingernails, hair, horns, claws, and hooves.
  — National Geographic, 9 Aug. 2019
• The overproduction of keratin clogs pores with dead skin cells, leaving red or white acne-like bumps on the surface.
  — Lacey Muinos, Health, 18 July 2023
• Best of all, this shampoo is great for all types of curls and is suitable to use on hair that’s been treated with keratin, chemicals, and color.
  — Sophie Dodd, Peoplemag, 14 Jan. 2024
• Deep Conditioner, available at Ulta for $26, for a keratin boost.
  — Nora Colomer, Fox News, 12 Aug. 2024
• The hair serum contains a mighty blend of ingredients, such as keratin, biotin, marine collagen and seaweed extract.
  — Maya Gandara, StyleCaster, 10 July 2024

Last Updated: 12 Dec 2024