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Toothpaste made from hair could help repair teeth: Study

Keratin toothpaste from human hair forms a protective enamel-like coating that repairs damage and could prevent tooth decay, offering an eco-friendly dental treatment option.

  • Researchers at King's College London developed a novel toothpaste made from keratin extracted from human hair to repair tooth enamel.
  • The development responds to enamel erosion caused by acidic foods, poor hygiene, and ageing, which lead to sensitivity and tooth loss.
  • Keratin forms a crystal-like scaffold on teeth that attracts minerals in saliva, creating a protective enamel-like coating that supports remineralisation.
  • Sara Gamea, the lead author, explained that keratin provides an innovative and sustainable option for dental care by utilizing biomaterials derived from discarded hair and skin.
  • This keratin toothpaste could provide a sustainable, effective dental care method with potential public availability within two to three years pending further research.
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BBC News broke the news in United Kingdom on Wednesday, August 13, 2025.
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