Authors Julian Oldmeadow and Barnaby Dixson went on to suggest that men may grow facial hair "because it maximizes facial masculinity and augments perceived dominance."
Meanwhile, another study by social network Eva and Censuswide claims that men with "longer facial hair" are more likely to "fight, cheat and steal." The survey, which focused on men in the United Kingdom, found that 47 percent of unshorn subjects had cheated on their significant others, compared with 20 percent of men without facial hair. In addition, 45 percent of hairy respondents had been in a fight and 40 percent had stolen, compared with 29 percent and 17 percent of nonbearded men, respectively.
Read more here and here.