Nd yag Laser tattoo machine adopts the Q switched mode, which makes use of the instantaneous emitted laser to break the pigment in ill structure. That’s the laser instantaneous emit theory: centralized high energy emit suddenly, which makes laser of settled wave band instantaneously penetrate through cuticle to the ill structure in 6ns, and break the relevent pigments quickly. After aborb the heat, the pigments swell and break down, some pigments ( in skin-deep cuticle ) fly off the body immediately, and other pigments ( deep structure ) break down then become the tiny granule can be licked up by the cell, digested and egest from the lymph sell. Then the pigments in ill structure lighten to disappear. Moreover, the laser do not damage the around normal skin.