The present invention provides an apparatus and method of body contouring and skin conditioning. The apparatus 10 treats cellulite and the like by producing vibrations in the subcutaneous layers of fat. A cup 18 of handpiece 16 is placed against the skin to create a chamber 60. A vacuum source 160 and compressor 162, which are in communication with chamber 60, are then controlled to produce an oscillating pressure within the chamber 60. This vibration of the skin surface is transferred through the dermal layers thereby influencing fluid retention and cellulite build up.