Treatment principle: Using laser selective light pyrolysis, the laser energy absorbed by pigment particles, generated at the moment of its expansion, rupture, and part of the pigment particles with epidermal migration to the surface is cleared, the vast majority of macrophages are running to the lymph nodes or consumed by macrophages. And the surrounding normal tissue, because do not absorb fixed wavelength of laser, does not form any damage. Range of treatment: A, Q switch 1064 nm laser can effectively remove the black tattoo, eyebrow, eyeliner and traumatic pigmentation and freckles, etc. Second, Q switch frequency doubling 532 nm laser is suitable for treating red or brown eyeliner, eyebrow tattoo, tattoo, lip line, etc. And it can effectively fade red or brown all kinds of shallow spots.