What all techniques share in common is the use of very small incisions that allow
the insertion of a cannula which is a hollow rigid tube says San Francisco face lift surgeon. This is then attached to a machine that produces a strong vacuum allowing the surgeon to maneuver the cannula in the various fat layers below the skin to suction out fat. To prevent blood loss and numb the tissues, all the techniques require infusing a special fluid into the fat layers prior to suctioning. In general, all techniques share these features and only differ in the method used to assist with the removal of fat.