STORY: Researchers in London have developed a dental treatment using keratin, a protein found in hair, skin, and wool, that they say can repair damaged tooth enamel. ''Currently enamel, once it's gone ...

Brushing your teeth with toothpaste made from human hair may not sound appetizing, but it could be the future of dental care. Not full strands of hair, of course. According to New Atlas, a study at ...