Patients often ask how to apply ice/cold compresses after facial surgery, such as double eyelids, lower eye bags, eyebrow cut or hyaluronic acid injection, etc.? Just remember the following four items. 1, time from the immediate post-operative surgery, just now; an ice compress / cold compress how long it? An ice compress/cold compress can be applied for 15 minutes to 30 minutes, if you feel comfortable, you can also extend the time appropriately; how long is the interval? Usually 2 hours to 6 hours. How many days after surgery can I apply ice/cold compresses? Generally, ice packs/cold packs are applied within 24 hours after surgery. 2.What kind of equipment should I choose? I think the best tool is milk in a bag at home (in the freezer), or ice in the freezer, or mineral water, but I recommend putting it in the freezer first to avoid too cold and frostbite on the icing/cold compress. In addition, it is best to be equipped with sterile gauze, clean and complete plastic bags. 3. How does it work? In order to avoid wetting the wound dressing, it is better to apply a complete bag or bottle, if there is a break, you can put a complete plastic bag outside to avoid the liquid from wetting the dressing, in order to be comfortable when icing/cold compressing it is better to put a piece of clean gauze slightly on the face to avoid the discomfort caused by the direct contact of the icing/cold compressing bag on the face. As long as the temperature is below 10 degrees on the line, should avoid too cold when the ice is too long to cause frostbite, especially for patients who are not sensitive. 4, what are the benefits of ice / cold compresses? It can make local capillary constriction, reduce the release of inflammatory mediators, relieve or alleviate pain, reduce the exudation of local substances, relieve swelling, reduce bleeding, and avoid or reduce the probability of postoperative bruising and ecchymosis.