1. Wash your hands: be sure to wash your hands before wearing a mask, otherwise the contaminated bacteria on your hands will pollute the mask after touching it, and bacteria will also attach to the mask and enter the human body through your nose and mouth.
2, positive and negative: before wearing a mask, observe the front and back of the mask. Generally speaking, the lighter side is the inner layer that contacts the skin.
3. Up and down: Before wearing a mask, you should also find the nose of the mask. The nose bridge is located at the upper end of the mask and the lower end is used to wrap the chin.
4. Wear: first hang the ear cord on your ear, then hold the mask with your hand and hang the other ear cord on your ear. If it is a bandage mask, you need to tie the rope above first, and then tie the rope below.
5. Adjustment: Adjust the bridge of the nose to the position of the bridge of the nose, and then pull the mask to the chin. The lower end of the mask must tightly wrap the chin.
6, fixed: press the bridge of the nose according to the shape of the nose to prevent bacteria from entering.