According to a team of chemical engineers in Vadodara, Gujarat, human hair can efficiently separate oil from water. And industries can use the research to separate oil from factory effluents.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/hair-have-role-pollution-control-researchers
[2] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmental-science