A modular energy application device for skin tissue treatment includes a first module, the first module including one or more skin treatment electrodes oriented on a surface to contact the skin tissue； a device to connect the first module to a source of electrical power and control； at least a second module, the second module including one or more treatment electrodes oriented on a surface to contact the skin tissue； a connection device to couple the first and the second modules； an electrical connection device to electrically couple the first and second electrodes； electrical power applied to the electrodes of the first module also applies electrical power to the electrodes of the second module.
