A healthy way to overcome a COVID-19, Masticker

“How long can I use this mask?” Due to the shortage of masks, many people are advised to recycle masks, and they are actually reusing masks for a long time. However, if the mask is exposed to the air for a long time, the filter will be degraded. Reusing the mask for more than three days exposes the user to a high degree of air exposure and is dangerous. Many people do not have guidelines on how many days to use a mask. They are confused about how many masks you have used, take out the new mask and use it without throwing it away. To solve this problem, I suggest a product that gives you information about "how much this mask has been used" by using oxidation of Masticker.