A Mongolian wrestler adjusts her hair before a match during the 2016 World Sumo Championship on July 30, 2016 in Ulaanbaatar, Mongolia. (Photo by Taylor Weidman/Getty Images)

A model has her hair done before The Blonds Spring/Summer 2016 collection during New York Fashion Week in New York September 16, 2015. (Photo by Carlo Allegri/Reuters)

A tourist walks inside the Ice Palace glacier hollow at Hintertux glacier, located at around 3250 meters above sea level, in Zillertal, Austria, 02 March, 2016. The hollow's temperature remains constant at 0 degrees Celsius, in summer and winter alike, and is also used by the University of Innsbruck for scientific research projects. (Photo by Lisi Niesner/EPA)

Japanese researchers have sparked hopes of finding a cure for human baldness after successfully growing hair on hairless mice by implanting follicles created from stem cells, Agence France Presse reports. A picture taken on April 13, 2012 and released by the Tsuji Lab Research Institute for Science and Technology of the Tokyo University of Science shows a hairless mouse with black hair on its back at the laboratory in Noda, Chiba Prefecture. (Photo by Tokyo University of Science via AFP)

Karolina Kurkova, Alana Zimmer, Valerija Kelava, Eniko Mihalik, Snejana Onopka and Iris Strubegger star in “Hairy Tales” a focus on mostly big hair styled by Luigi Murenu (hair style; Make-up: Karim Rahman) for «Vogue» Germany April 2012. Joanne Blades styles the editorial with Daniele and Iango behind the lens.