The present invention provides a radio frequency (RF) having an active electrode (1, 31) disposed on the active side (15) of the device and having a first skin contact surface for electrical contact with the skin of a user in use. ) Relates to an apparatus (100) for skin treatment. The device further has a return electrode (2, 32) disposed on the working side (15) of the device and having a second skin contact surface for electrical contact with the skin of the user in use. The second skin contact surface is at least 5 times larger than the first skin contact surface. An RF generator (to supply an RF treatment voltage between the active and return electrodes when the active and return electrodes are in electrical contact with the skin so as to heat the skin under the active electrode. 21) is configured. A coupling member (45, 46； 61, 62； 402, 403) is adapted to be disposed on the first skin contact surface and has a conductive material to electrically couple the active electrode to the skin surface. To improve. The coupling member includes a first layer (45, 61, 403) of a first conductive material adapted to be disposed on the first skin contact surface and a first layer remote from the first skin contact surface. And a second layer (46, 62, 402) of a second conductive material different from the first material, disposed on the first layer on the side of the first layer, the first layer comprising: The first material has a modulus of elasticity of at least 100 kPa, the second layer has a thickness of 10 μm or less, and the second material has a thickness of 1000 CPS. It has the following viscosity:本発明は、装置の動作側（１５）に配置されて、使用中のユーザの皮膚との電気接触のための第１の皮膚接触表面を有する活性電極（１，３１）、を有する高周波（ＲＦ）皮膚トリートメント用の装置（１００）に関する。装置は更に、装置の動作側（１５）に配置されて、使用中のユーザの皮膚との電気接触のための第２の皮膚接触表面を有するリターン電極（２，３２）を有する。第２の皮膚接触表面は、第１の皮膚接触表面よりも少なくとも５倍大きい。活性電極の下の皮膚を加熱するよう、活性電極及びリターン電極が皮膚と電気的に接触しているときに活性電極とリターン電極との間にＲＦ処置電圧を供給するように、ＲＦ発生器（２１）が構成される。結合部材（４５，４６；６１，６２；４０２，４０３）が、第１の皮膚接触表面上に配置されるように適応されるとともに導電材料を有して、皮膚表面への活性電極の電
