The distance from the nose to the middle of the mouth is small, and the lower part of the head of the depilator is wide. When depilating, the distance between the nose and the laser head of the depilator is too wide to allow the laser head to fully contact the whole lip hair part, and the part near the nose will remain.
The fan is installed at the tail to form a reverse flow. This design is conducive to heat dissipation, and the hole in front is also quite good for heat dissipation of the lamp tube.
The part of the head should be as flat as possible. For example, it is inconvenient to take off lip hair when it is wide.
Single air duct heat dissipation may not be good.
Sorry, I didn't see that this is a depilator