Cotton face mask
Cotton masks are mainly used in manufacturing, and the material is soft and comfortable.
Cotton mask material: cotton, gauze, wool, canvas and velvet.
Advantages: keep warm, can be repeatedly cleaned and used, the filter effect can be maintained by changing the filter.
Note: There are many Cotton Face Masks on the market that contain carcinogenic fluorescent agents. They can easily enter the human body through the nose and nose and cause harm to the human body. Therefore, you must be very careful when choosing, and you must not buy Cotton Face Mask containing fluorescent agents.