Maybe they just needed to get their hair out of their eyes

It seems that women have made few contributions to the discoveries and inventions in the history of civilization; there is, however, one technique which they may have invented—that of plaiting and weaving. If that is so, we should be tempted to guess the unconscious motive for the achievement.

--Sigmund Freud, New Introductory Lectures on Psychoanalysis, p. 164.