... they can be metabolized by the lymphatic system or egested out of body, which makes the targeted pigment disappear ... first treatment will take effect quite obviously. Specifications of Laser Beauty Equipment Laser typeQ-switch ND YAGLaser output wave length1064nm/ ... width~10nsRecurrence rate1,2,3,4,5,6HzCooling conditionWind system + closed circulating +cooling systemPower source220V/5A or 110V ...