According to the study, published in the Journal of Hospital Infection, men without beards are more than three times as likely to be carrying a meticillin-resistant form of coagulase-negative staphylococci on their cheeks than those with beards.
The study also found that clean-shaven men were 10 per cent more likely to have common bacterium Staphylococcus aureus present on their faces, a bacterium which causes respiratory and skin infections.
The study examined the faces of 408 healthcare workers, with and without facial hair.
Researchers from Boston's Brigham and Women's Hospital, who conducted the study, suggested that the difference between clean-shaven men and their bearded peers could be attributed to the micro-abrasions caused by shaving.
Also Read
According to the researchers, those tiny cuts in the skin "may support bacterial colonisation and proliferation".
In a separate study, British researcher Dr Adam Roberts is exploring how bacteria found in beards could be used to develop a new stock of antibiotics, as the current stock becomes increasingly ineffective.
The new findings are a far cry from the results of a study last year, which found that beards are as dirty as toilets.