The chemical substance L-cysteine is obtained for poultry feathers or human hair and is used to extend the shelf life of baked goods. This amino-acid is the main culprit for the soft consistency in most baked goods, which can only be found in hair.
According to scientists most of the hair used to create this amino-acid comes from China, where it is collected from barber shops and hairdressers. White bread is the only type of bread that contains L-cysteine, which can be avoided by eating integral or black bread that usually doesn’t contain additives. L-cysteine is also present in all major fast food chains.
Fortunately, you can make your own bread using a bread making apparatus and with a little good will you can make homemade bread easy and quickly without the hair that you are eating at the moment.