As air enters and hits the face mask surface, particulates are trapped in the first layer, and unfiltered organic vapours are attracted to the mask's filter. The activated carbon absorbs the vapours at a molecular level, removing viruses, bacteria, odours, and gases below exposure limits.

Some replaceable activated charcoal filter pads say they should be replaced daily. Our own MyAir replacement filters should be replaced after each use, though many of our customers report being able to use them comfortably for several days before it becomes harder to breathe; your usage may vary.

Please note that Amazon does not independently test masks, but checks KN95/N95 masks against the CDC counterfeit lists and collect testing reports from selling partners. The Food and Drug Administration (FDA) issued an Emergency Use Authorization (EUA) for respirators manufactured in China.

You can expect the masks to help unclog pores and absorb environmental pollutants, oil, and dirt from the skin, Debra Jaliman, MD, a dermatologist in New York City, told Health. Charcoal is especially good for people with acne and blackheads as it can help reduce excess oil, said Dr. Jaliman.