How to wash your fabric mask?

Hand wash the fabric masks at 40 degrees as they are a delicate item. Dry either on a flat surface or over a rail. Do not tumble dry.

For silk fabric masks, make sure to use a mild detergent when hand washing at 30 degrees and dry on a flat surface. Do not tumble dry. Iron or steam on a low heat.

How often should you change your PM2.5 filter?

The advise is to change the filter after a week of regular use. If you are using the filter less regularly, you can adjust how often you need to change it.