A skin treatment head includes treatment head surface; multiple bristles extending from the treatment head surface and defining a virtual edge face circumferentially surrounding the bristles and a virtual top face defining a first height of the bristles; and one or more rotatable elements extending from the treatment head surface and having a second height lower than the first height, such that in order to apply a tangential force to rotate the rotatable elements, the skin treatment head is tilted relative to a skin surface.