a radiofrequency (rf) skin treatment device (100) comprising an active electrode (1, 31) disposed on an operating side (15) of the device and having a first skin contact surface for electrical contact with the skin of a user during use. The device further comprises a return electrode (2, 32) disposed on the operating side (15) of the device and having a second skin contact surface for electrical contact with the wearer's skin during use. The second skin contact surface is at least five times larger than the first skin contact surface. an RF generator (21) arranged to provide a treatment RF voltage between the active electrode and the return electrode when the active electrode and the return electrode are in electrical contact with the skin to heat the skin. skin below the active electrode. a coupling member (45, 46； 61, 62； 402, 403) is adapted to be disposed on the first skin contact surface and comprises an electrically conductive material for improving the electrical coupling of the active electrode to the skin surface. the coupling member comprises a first layer (45, 61, 403) of a first electrically conductive material adapted to be disposed on the first skin contact surface, and a second layer (46, 62, 402) of a second material electrically conductive, different from the first material, disposed on the first layer on one side of the first layer distant from the first skin contact surface.dispositivo (100) para tratamento da pele por radiofrequência (rf) compreendendo um eletrodo ativo (1, 31) disposto em um lado operacional (15) do dispositivo e que tem uma primeira superfície de contato com a pele para contato elétrico com a pele de um usuário durante o uso. o dispositivo compreende, ainda, um eletrodo de retorno (2, 32) disposto no lado operacional (15) do dispositivo e que tem uma segunda superfície de contato com a pele para contato elétrico com a pele do usuário durante o uso. a segunda superfície de contato com a pele é de ao menos cinco vezes maior que a
