External incision to remove bags under eyes is a kind of operation, and when to reduce swelling depends on the following points: 1. Wound size; 2. Business scope; 3. Whether it is below the orbital bone; 4. Whether it is a single liposuction or peeling. The greater the trauma, the slower the recovery. Usually it is swollen for three days and swollen for seven days. If the operation is complicated, such as lifting the zygomatic fat pad, its peeling range will be very large, and it may take two weeks to completely reduce the swelling.