How Long Can You Wear KN95 Masks?
Manufactured in China and regulated by the Chinese National Medical Products Administration (NMPA), KN95 masks are not approved by the U.S. National Institutes of Occupational Safety and Health (NIOSH) but remain available for purchase as protection against COVID-19 and other airborne contaminants. In 2020, when the pandemic increased shortages of all NIOSH-approved masks, the FDA […]