Check out Pierre Boutroux's haircuts throughout his career:
Pierre Boutroux had various haircuts during his career. He reached fame as an outstanding mathematician, professor and philosopher. Nevertheless, the French mathematician and historian of science was especially known for his beautiful fashion sense and his likable character. Before his death at the age of 42 he was again and again talked about in tabloids due to his exceptionally looks. Check out Pierre Boutroux's famous looks right here: