After liposuction has been performed in a region, a skin tightening procedure can be implemented by heating the external surface of a cannula to between 145° F. and 180° F. and moving the cannula beneath the skin, in the region, so that heat is transferred from the external surface of the cannula to connective tissue located in the region. This causes skin tightening to occur. Heat transfer may also be implemented by spraying a hot liquid into the region or by suctioning the connective tissue into a cannula and spraying it with hot liquid.