... water cycle cooling system,the technology of this instrument is not laser nor IPL(IPL.photon),but a electromagnetic similar to microwave, ... thoroughly.work in skin,muscle and fat2.The Best ComfortablenessRF beauty Instrument use the patented technology capacitive-insulation-pulse,the costomer ... no pain during the treatment.Under the same energy,RF,IPL,carbon dioxide laser can achieve the skin depth.3. ...