Working Principle:

Laser emitted by the system has a strong penetration ability which allows it to reach 

the deep layer of dermis. The pigment particles absorb the light energy and explode 

sharply, burst into the tiny pieces, thus diminish the color density and get rid of it.

So the appliance can effectively do away with mutant pigmentations and vascular tissue

based on undamaged ambient tissue. This is called ‘Selective heat absorption’ principle

in medical field.