... ota(birthmark), dermis spot, age pigment, freckle etc.2 Exogenous melanin: Large area tattoo, embroider eyebrow, Eyeliner ... pore-refining, remove blackheads etc. Technical ParametersLaser TypeQ-switch, ND:YAG solid state laser (belonging to4 class ... cycle cooling and Semiconductor forced-air coolingInput Power350WEnergy450mj (single pulse)Safe SpecificationMa×5a900mj (double pulse)Pulse Frequency1Hz ...