It may be worth x-posting this one to our sister sub, /r/AskAnthropology

Clonycavan Man, a prehistoric bog body, wore a distinctive top-knot hairstyle, held in place with a gluey substance that included resin-so he was definitely making an effort to keep his hair in a particular style. Why, we don't know. http://en.m.wikipedia.org/wiki/Clonycavan_Man

Sorry, we don't allow throughout history questions. These tend to produce threads which are collections of trivia, not the in-depth discussions about a particular topic we're looking for. If you have a specific question about a historical event or period or person, please feel free to re-compose your question and submit it again. Alternatively, questions of this type can be directed to more appropriate subreddits, such as /r/history or /r/askhistory.