Abstract: The present disclosure relates to devices and methods for cosmetic treatment of a skin of a subject with RF energy. Examples of the present disclosure include movable electrodes and/or movable skin temperatures sensors.

Abstract: An apparatus for treatment of a skin of a subject is provided. The apparatus comprises a base, an applicator head which is rotatably mounted with respect to the base around an axis of rotation, and defines a cavity for receiving a portion of the skin of the subject, a drive for rotating the applicator head, and a pump for reducing a pressure in the cavity for sucking the portion of the skin of the subject into the cavity. The applicator head further comprises one or more electrodes, and the apparatus further comprises one or more electrical power sources and a control system for controlling electrical energy supply to the electrodes. A cross-section of the cavity with a plane comprising the axis of rotation is non-constant in rotation. Also disclosed are methods for treatment of the skin.