When the laser light is being absorbed by the pigmented lesions, the light will vibrate and break the pigment into the smallest particles, in thin “dust” form. As compared to the traditional Q-switch Nanosecond YAG laser, the DiscoveryPICO machine works in ultrashort picosecond pulses which is 100x shorter pulse duration than in nanosecond. The tiny particles will then be easily eliminated by the body immune system.