Having a beard while wearing masks during a pandemic is risky. What’s the best option? These tests show that N95-type respirators still provide the most protection - bearded or clean shaven.

“Though variable, N95 respirators offer the best respiratory protection for bearded men. While KF94 and KN95 FFE is compromised considerably by increasing beard length, they proved better options than procedure and cotton face masks.”

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nature.com/articles/s41370-021…

Assessing the effect of beard hair lengths on face masks used as personal protective equipment during the COVID-19 pandemic - Journal of Exposure Science & Environmental Epidemiology

Journal of Exposure Science & Environmental Epidemiology - Assessing the effect of beard hair lengths...

^Nature