ENVIRONMENT
05/26/2010 05:12 am ET Updated May 25, 2011

Human Hair: The Food Additive You Might Be Eating

Clippings from short hair ... are used mainly as fertilizer or source material for a ubiquitous food additive called L-cysteine (L-cys for short). This amino acid, which gives hair its strength, also gives Noah's bagels their bounce, puts the softness in Tastykakes, and imparts mom-made freshness to Lunchables.

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