How to wear a face mask correctly

How to wear a face mask correctly?Some one buy face mask from seller.But they do not know how to wear it correctly.

Please follow below steps:

1. Wash hands before wearing a face mask.

2. Light colors to face, dark colors face outward.

3. The position of the metal strip should be above the upper part.

4. You need to unfold the mask first and open the fold position.

5. After putting on the mask, you need to squeeze the metal bars on both sides of the bridge of the nose with both hands.

6. Make sure that it fits your face and does not leak your nose and mouth.

7. Under COVID-19, you can wear medical face masks when going out, and it should be replaced every 4 hours.