27 December 2013
An urban myth that hair can be used to make soy sauce has led many in China to buy discarded hair from barber shops at low prices, reports the People's Daily. […]
A food safety expert surnamed Shi told the paper that is indeed true that hair can be fermented to make soy sauce. However, Shi said this is prohibited as hair can contain excessive amounts of heavy metals. "This existed years ago but is rare now. Some small factories still do it illegally," Shi added.