It fits one narrow situation: a small, pinchable pocket of genuine fat that has survived stable weight and steady diet, and that is too minor to justify surgery. Diet and exercise cannot aim at a single spot, a cooling or heat device treats a broader zone, and liposuction removes large volumes with anesthesia and recovery. The injection lives in the gap between them. At RE:BERRY Gangnam the physician places your case on that spectrum before recommending any of them, and will point you to another route if a needle is the wrong tool for your fullness.

Liposuction is surgery: fat is physically suctioned out through small incisions, usually in one operation, under local, sedation, or general anesthesia, with days to weeks of recovery, and it can remove a large volume at once. A fat-dissolving injection uses no incision and no anesthesia beyond a topical cream, treats a small defined pocket point by point, and works gradually across a short spaced course. It suits a minor pocket; a large volume remains a job for surgery.

Deoxycholic acid is a bile salt that acts like a detergent on cell membranes. Placed inside subcutaneous fat, it dissolves the membrane of the fat cell so the cell breaks apart, and the released contents are then cleared through the body's normal metabolic and immune pathways over the following weeks. Nothing is implanted and the change is gradual. Because the same molecule can affect any membrane it contacts, keeping every deposit inside the fat layer is the whole safety principle behind the procedure.

No, and a physician who tells you otherwise is overselling it. The dose stays inside one mapped pocket, so it refines that one area and leaves your overall body weight much as it was. If your goal is broad weight change, diet, exercise, or medical weight management is the right route, and the injection would disappoint. At RE:BERRY Gangnam the injection is only planned once your weight is already stable, because a pocket treated during active weight change is a moving target.

The common areas are the submental double chin, the jawline, the abdomen, the flanks, the upper arms, the inner thighs, and the bra line, along with other small pinchable pockets confirmed as genuine fat. Each area is judged on its own by pinch, and only a pocket that reads as true subcutaneous fat is treated. If the fullness turns out to be loose skin, muscle, or fluid, the physician redirects you before an injection is ever planned.

Most pockets are planned as a short course of three to four sessions spaced about three to four weeks apart, because each round dissolves only part of the pocket and the body clears it gradually. The exact number is not fixed in advance. The physician reassesses the pocket at each review and decides whether that area needs another round. A small chin often completes in fewer sessions than a broad body pocket.

Swelling after a fat-dissolving injection is a sign the deoxycholic acid is doing its work. Deoxycholic acid triggers an inflammatory clearance of the disrupted fat, so the area swells for the first two or three days and can look fuller before it looks smaller. A treated chin feels tight and puffy in a small zone; a body pocket swells more broadly and often wants a light compression garment. There is no wound, and desk work is usually fine within about a day.

The change is gradual because your own metabolism clears the disrupted fat over roughly four to six weeks, so a single round shows only a subtle slice and the contour accumulates across the spaced course. Because the cleared fat cells are removed by the body instead of merely shrinking, a completed plan tends to hold while your weight stays stable. Response speed varies by individual and by area, so the physician gauges the pocket at each review and avoids promising a fixed figure.