 In most current cultures , it is more typical for women to wear long hair than for men to do so . An American study shows significant correlation between hair length and age , which indicates that younger women tend to have longer hair than older women . A significant correlation was also found between women 's hair length and hair quality . Moreover , hair quality was correlated with the women 's perceived physical health . Consistent with principles of evolutionary psychology , these results indicate that hair length and quality can act as a cue to a woman 's youth and health , signifying reproductive potential . The correlation between the woman 's hair length and marital status , or number of children , was however not more than to be expected from the correlation between hair length and age . 
