Hair in bread

Human hair seems to be a source that increases the 'quality' of bread. This 'necessary' source for bread is called Cysteine. Most of this hair is been collected in barbershops in China and sold as Cysteine with the sources of feathers or animal hair.
This film of the 'keuringsdienst van waarde' is a research about this topic. The film is in Dutch with parts in English.
http://keuringsdienstvanwaarde.kro.nl/seizoenen/2014/afleveringen/06-02-2014