In China, hair extensions, wigs and weaves are big business. Buyers in hair salons and shopping malls are often told they are getting real human hair - but when you look closely, sometimes things are not as they seem.
In a tiny village in Hunan province, central China a man dressed in a white vest and shorts rides around the dusty streets on a rusty bicycle, shouting and ringing his bell.
I stop him and ask what he's up to. "I'm collecting hair," he says. "When I ring my bell women come out and I cut their hair. I make hair extensions."
I ask him how much he pays women for their hair. "I offer them a good price, but I need to make a profit," he says with a smile.
The streets of the village are covered in hair drying beneath the scorching sun. Some of the hair is definitely human hair, But this is the