An electrosurgical apparatus applies electrical current to skin, preferably for skin tightening procedures. A housing includes a substantially flat edge, disposable on the skin. The housing stores a plurality of electrodes which are movable through an opening defined by the edge. A vacuum is applied in the housing such that the edge seals with the skin. The electrodes pierce the skin perpendicularly and apply an RF electric current to heat primarily the subcutaneous layer. A coolant is applied to cool the outer layer of the skin.
