The present invention concerns a skin treatment device for professional and private use. In particular the present invention concerns a skin treatment device (10) comprising a drive unit (20) and an attachment (30), the drive unit (20) comprising an output element (60) and a rotary support element (50) rotating about an axis of rotation, the rotary support element (50) comprising protrusions, the attachment (30) comprising a skin treatment element (32) and a chassis (34) for the skin treatment element (32), the chassis (34) comprising a multitude of recesses to cooperate with the protrusions of the rotary support element (50) of the drive unit (20), wherein the chassis (34) can be supported by the rotary support element (50) and wherein the protrusions can be brought into an engagement position with the recesses, while the chassis (34) is supported by the rotary support element (50), and the protrusions can be brought into a disengagement position with the recesses, while the chassis (34) is supported by the rotary support element (50).
