1. Keep your hands clean. Disposable masks are sterile and pollution-free, so we must pay attention to hand cleanliness before wearing them, especially in this special period.

2. Know what's right and what's wrong. Many friends will put the mask of both the front and make a mistake, also someone purely in accordance with the light on, dark in foreign, in fact, not all is such, everybody when worn in addition to observe the color, it is best to see which side is also water absorption layer (suede), which side is waterproof layer (smooth surface), waterproof layer, absorbing layer.

3. Separate the top from the bottom. It's actually easy to distinguish between the top and bottom of a disposable mask because there's a metal strip on the upside-down side that holds the mask to the nose and keeps germs out from above.

4. Wear a brace. When the mask is put on in the right direction, please note that you must gently press the metal strip on the bridge of your nose with both hands to make it fit. Then hold the upper part of the nose and grab the lower end of the mask to pull apart the wrinkles so that the entire mask covers the lower half of the face, including the chin.