1. The head-mounted mask needs to hold the mask body with one hand, and the fingertip is located at the position of the nose clip, so that the two headbands can hang freely under the back of the hand; The lower strap is worn on the neck; the index fingers of both hands start from the middle of the nose clip and move to the sides while pressing down on the nose clip to shape the bridge of the nose.

2. The ear-worn mask needs to face the side of the mask without the nose clip, pull the ear strap with each hand so that the nose clip is above the mask; use the mask to resist the chin; pull the ear strap toward the ear and adjust the ear strap to feel comfortable ; Place the fingers of both hands in the middle of the nose clip and move it to the sides while pressing down on the nose clip to shape the bridge of the nose. Squeezing the nose clip with one hand will cause the nose clip to have an acute angle, causing leakage and reducing protection performance. Also note that you should use both hands to press the nose clip.