Disposable masks can be used repeatedly if used in a place with low-risk infection possibility and kept clean and complete, especially if the inner layer is not polluted. They should also be placed in a clean, dry and ventilated place. In addition, disinfectants, including medical alcohol, will reduce the protection capability of the masks, so it is not appropriate to spray alcohol on a mask for disinfection.

Source: Press conference of the joint prevention and control mechanism of the State Council