It has been suggested that in order to save the use of masks, the masks should be covered through paper towels, which can reduce the contamination of the masks and prolong the use of the masks. However, it should be noted that the mask itself has a special structure, which can prevent tiny particles as well as filter and block viruses and bacteria. If you cover the mask with paper towels, it is possible that the paper towels may have a more limited role in filtering bacteria and viruses, etc. Even if the mask is covered with tissue paper, there is still a possibility that bacteria and viruses may be adsorbed on the surface of the mask. Therefore, if the living environment is relatively clean, such as contact with people is rare and the living environment is relatively empty, it is not a big problem to adopt such an approach. However, if you go to the hospital in this way, or contact with special patients, the use of paper towels does not guarantee the safety, so at this time it is not recommended to repeat the use of masks. Content source: Dr. Yurai