A skin treatment device comprising a light source for providing a light beam for optically treating a skin, a wheel with a wheel surface for reflecting the light beam towards the skin, wherein different angular positions of the wheel correspond to respective different directions of reflection for the light beam, driving means for rotating the wheel for changing the angular position of the wheel, an angular position detector for detecting the angular position of the wheel, a storage means for storing a predefined skin-treatment pattern and a relation between the different angular positions of the wheel and the corresponding respective different directions of reflection for the light beam, and a control circuit coupled to the light source, the angular position detector and the storage means and being operative to control the light source in dependence on the angular position detected by the angular position detector in such a way that, for each revolution of the wheel, the light beam only illuminates the wheel surface at selected angular positions to realize the predefined skin-treatment pattern.
