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POPSPlastic surgery in dallas Most liposuction procedures are performed under local anesthesia (loss of sensation without loss of consciousness) by the tumescent, or wet, technique. In this technique, large volumes of very dilute local anesthetic (a substance that produces anesthesia) are injected under the person's skin, making the tissue swollen and firm. Epinephrine is added to the solution to reduce bleeding, which allows the removal of larger amounts of fat.