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New Wool Keratin Toothpaste Could Outperform Fluoride

11/16/2025

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Summary

Story summary

Researchers at King's College London report keratin from wool can form a mineral layer that halts tooth decay and may outperform fluoride.
The keratin, when combined with saliva, can repair enamel by mimicking its structure.
The approach uses a sustainable resource and could yield a new toothpaste or professional gel within three years.
The approach may be compared to silver diamine fluoride (SDF), which stops decay but cannot regenerate enamel.

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Story summary

Researchers at King's College London report keratin from wool can form a mineral layer that halts tooth decay and may outperform fluoride.
The keratin, when combined with saliva, can repair enamel by mimicking its structure.
The approach uses a sustainable resource and could yield a new toothpaste or professional gel within three years.
The approach may be compared to silver diamine fluoride (SDF), which stops decay but cannot regenerate enamel.