First of all, we need to be clear about what facial expressions rely on. It is the deep expression muscle. When the muscles of expression contract, the face produces a variety of expressions, so where are the muscles of expression located? It is located on the bone surface, above the bone surface is the SMAS fascia layer, and above that is the fat and skin layer. In traditional facelift surgery, the skin is peeled off directly, and then the surgery is completed with a little treatment at the location of the parotid gland and the bite muscle fascia. However, in the current facelift surgery, the treatment of the SMAS fascia layer and the peeling of the skin is much larger than before, and the treatment is also much more advanced. However, the current facelift surgery still mainly deals with the SMAS fascia layer and the skin layer, and does not deal with the expression muscle, so it does not have any effect. However, after the surgery, there is a certain period of swelling, when the facial expression will be weakened, generally after the scar softens, there is basically no effect. The time is usually about one month, if there is scar adhesion or scar reaction is heavy, then you need to wait until three months before the expression can return to normal.