The very unusual uses of human hair
Much of the human hair collected in Asia ends up in wigs, weaves and extensions. However, hair has also been adapted for some far more bizarre purposes, from mopping up oil spills to supplementing pet food.
Prof Emma Tarlo, anthropology professor at Goldsmiths, University of London, explains all.
Video: Claire Bates
The video is part of a longer article: Untangling where your hair extensions really come from