How to distinguish the quality of mask?

1. The 100% cotton mask paper looks like a pure thick feeling. The polyester-containing ingredients, although treated, will have a bright feeling.

2, 100% cotton mask paper is easy to tear, and the fiber strip after tearing is short, the polyester-containing chemical fiber component is not easy to break, and the fiber strip after tearing is long.

3, 100% cotton mask paper after burning no obvious odor, the side is very flat, there is a little powder. The polyester-containing component has a slight odor after burning, and the burned side has a slight curl and has a granular shape.