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Why a King's College scientist thinks hair could repair teeth
Dr Sherif Elsharkawy believes the technology could be available within two years.
Toothpaste made from your own hair could help repair and protect damaged teeth, researchers say.
Scientists from King's College London found that keratin - a protein found in hair, skin and wool - can repair tooth enamel and stop early stages of decay.
So how would it work? And could it really be something we see on the high street soon?
