First, let’s understand the masks. Whether it is a disposable mask or other masks, there are positive and negative sides. For disposable masks, the darker color is the front, and the front is facing outward. There are metal strips for nose clips.
Second, the reverse side of the disposable mask is lighter in color, and the reverse side is facing inward, which means that the lighter side is close to our face. In addition, it should also be noted that the end with the metal strip is above the mask, do not bring it upside down.
Third，Wash your hands.
Post time: Apr-13-2020