We recommend washing the fabric mask every two days and replacing the filter every five to seven days.

To wash mask, remove the activated carbon filter and then put the mask in soap diluted with warm water. Gently knead, clean rinse and hang to dry for a few hours. Please do not soak in water for a long time and do not bleach, so as not to cause mask distortion and reduce the filtration effectiveness. 

Also, a disinfectant wipe may be used to clean the respirator air valve on the front.