Hair-derived keratin toothpaste targets enamel repair

A King's College London study suggests keratin from human hair could repair and protect tooth enamel.

Hair-derived keratin toothpaste targets enamel repair

Researchers at King's College London report that keratin, a protein found in hair, may help repair tooth enamel and slow early decay. The study shows that keratin forms a protective coating when it meets minerals in saliva, mirroring the structure and function of natural enamel.

The researchers say this could lead to a toothpaste made from a person’s own hair, offering a personalized approach to dental care. Sara Gamea, the PhD researcher who led the work, calls keratin a transformative alternative to current dental treatments.

If validated in clinical trials, the finding could shift how dentists address early decay and enamel loss. A hair-derived toothpaste would join fluoride and sealants as a new tool, while also raising questions about safety, sourcing, and how quickly such products could be adopted.

The work reflects a broader interest in bio-inspired materials and personalized health. But the path from lab to market is long: rigorous safety testing, regulatory approval, and clear communication to avoid hype that outpaces evidence.

Highlights

The idea invites both optimism and caution as science moves toward real-world use.