Various other fat liquefaction techniques were introduced, based on the use of pulsed cannula, water, radiofrequencies (RF) and laser, in order to remove a larger amounts of fat. At the same time anaesthesia techniques were also being improved, and traditional liposuction was performed under local anaesthesia. However, liposuction is still a technique that involves the use of a scalpel, as well as postoperative pain and scarring.