If your beard is long, coarse, or thick, it may cause leaks if used with an improperly fitting CPAP mask. When wearing a CPAP mask, the cushion should seal around your nose, mouth, or both without needing to tighten the headgear too much. Long beards can prevent masks from properly sealing, and coarse hair may cause your mask to shift.
Choose a CPAP mask that’s intended for users with facial hair and consider using a beard conditioner to address coarse hair or a chinstrap to prevent your mask from dislodging.