Bone cutting is a major operation in surgery, with great risk and high probability of side effects. It's safer to have a face-lifting needle. The effect will be seen in about two or three weeks after face-lifting injection, and it will last for about three to six months. You can't eat hard food after operation, which will make the masseter rebound in a short time. And don't massage the injection site by hand for three weeks, and don't smoke, drink or take a sauna for one week.