Many people think that small spots will become large spots after laser treatment, mainly for two reasons: first, there is blackening phenomenon; Second, some spots are smaller than laser spots.

Although the size of laser spot can be adjusted, there are certain limitations. When the spot is smaller than the minimum spot that the laser can adjust, the laser spot will inevitably exceed the spot size, and the laser will "hit" the spot. When it turns black, all the skin hit by laser may turn black, so the blackened area is equal to the area of laser spot, not the actual area of spot. This is that turning black will make people feel that the spot is "hit" by the laser.