Recently, in response to the characteristics of the Delta variant, the  Chinese National Health Commission issued the "Guidelines for the Public and Key Occupational Groups to Wear Masks (August 2021)", which revised the guidelines for wearing masks.

In our daily life, many inadvertent habits may cause pollution to the face masks. What are the common wrong ways to wear a mask? How to store masks more hygienic? What should I do if I get acne and allergies when wearing a mask? Let’s explore.

Source: CCTV News (ID: cctvnewscenter)   and "Guidelines for the Public and Key Occupations to Wear Masks (August 2021)", National Emergency Broadcasting, China CDC, Qingdao Daily, etc.