According to a Chinese newspaper article printed in 2007 and found to be factual by HoaxSlayer.com, these hairbands pose a potential threat everyone should take seriously.
"People could be infected with AIDS, (genital) warts or other diseases if they hold the rubber bands or strings in their mouths while waving their hair into plaits or buns," the paper quoted a local dermatologist who gave only his surname, Dong, as saying.
http://afp.google.com/article/ALeqM5j0DcqENG9L1Z3TnL94DJdaJuhXfA
The danger in this Chinese product is insidious because no one would ever think biting a hairband could cause such a serious health problem.