According to a University of New South Wales study, it does not matter to women whether a man is clean-shaven or has a full beard.

Researchers asked people to rate four different types of facial hair: clean-shaven, full beard, light stubble (five days without shaving), and heavy stubble (ten days without shaving).

According to women, men reach their peak level of attractiveness when they have heavy stubble.

Clean-shaven faces and full beards tied for second place. Both men and women thought light stubble was the least attractive.

Both men and women scored men with full beards highest for masculinity, parenting ability, and health. Men also thought that beards looked best in general, followed by heavy stubble.

Read more: ScienceNOW