The grossest moment in Just Extensions, the self-produced documentary by L.A. serial entrepreneur Riqua Hailes that investigates the global human hair trade, is probably the scene where she arrives at a human hair market after a 17-hour drive through rural China and ends up picking through a large burlap sack filled with matted hair balls for sale.

In the trade, they call this “fallen hair,” or hair that has been pulled out of hair brushes, shower drains, and even the trash in rural villages and cities alike in Asia. And if you wear extensions, you might have it on your head right now.