What's the proper way to use a mask?

 

WHO recommends: 

 

Before putting on a mask, clean your hands with soap and water or alcohol-based hand sanitizer.

 

Cover your mouth and nose with the mask and make sure there are no gaps between your face and the mask.

 

Avoid touching the mask while using it and clean your hands if you do.

 

Replace the mask with a new one as soon as it's damp and don't reuse single-use masks.

 

Remove it from behind, discard immediately into a closed bin and then clean your hands with soap and water or alcohol-based hand sanitizer.