Long thin hair men are those who possess hair that is both long and thin in diameter. An example would be Keanu Reeves, an actor known for his signature long, flowing locks.
Long thin hair has been a popular style for men throughout history. In ancient times, it was often seen as a sign of strength and virility. In the 1960s and 1970s, it was associated with the counterculture movement. Today, it is simply a matter of personal preference.