Take the filter out of its box or, if changing from the mask.
2. Fill a bowl or basin with hot water and add detergent to clean and disinfect the fabric. Add a few drops of active oils such as tea tree, eucalyptus, or lavender to disinfect further. On this product, please add to note that do not use chemical disinfectants or alcohol because it will ruin the mask.
3. Immerse the mask and stir it for 10 up to 15 minutes.
4. Use a little brush soaked in soap or detergent to clean any discolored or dirty areas.
5. Rinse the mask in warm water, wring it out, and pat dry, be careful not to bend or twist the internal noseband.
6. Allow to dry in the sun or in a warm, especially on airy area.
7. Last but not least, you should replace it with an existing or new filter when the filter is dry.