2. You can also take photos with two mirrors, and put them together so that the included angle between the mirrors is 90, so that you can see your original appearance according to the reflection principle, that is, choose one mirror and observe the imaging of the other mirror.
Looking in the mirror also involves some physiological and psychological knowledge. The mirror presents an object image through reflection, and it will also present different object images when the person who looks in the mirror has different psychological conditions.
4, but the general flat mirror can still reflect your appearance more truly. Of course, the mirrors we usually buy are a bit uneven, but if you really want to know what you look like, you can choose a selfie without beauty or grinding.