How many times can I reuse my N95 mask? Here's what you need to know.
The amount of time a mask is worn is more important than how frequently it’s worn, says Richard Flagan, who studies masks and aerosols at the California Institute of Technology.With every breath you take in an N95, particles accumulate on the mask, Flagan says. That could make it more difficult to breathe if the mask has trapped a lot of particles.The elastic band on the mask could also get worn out and not fit around your face as snugly.
If you notice any of these changes to your mask, it’s time to stop using it — even if you’ve only used it a few hours. And since N95 masks can’t be washed, they should be thrown away once you can no longer use them.
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