The world's longest documented hair belongs to Xie Qiuping (China) at 5.627m (18 feet 5.54 in) when measured on 8 May 2004.

She has been growing her hair since 1973 from the age of 13. “It’s no trouble at all. I’m used to it,” said Xie Qiuping. “But you need patience and you need to hold yourself straight when you have hair like this.”