You may have to shave before wearing the mask

A graphic released by US CDC warns men about facial hair danger, for some facial hair styles could prevent respirators from making a seal on wearers' faces. Handlebar, walrus, and Zorro mustaches are fine, but the CDC says folks may need to lose their Dalis and Englishes, as the hair could come in contact with a respirator's exhalation valve, reducing their effectiveness.