The effective time of face-lifting needle varies from person to person. Under normal circumstances, you can gradually see the change of thin face about a week after injection, and the effect can last for 6-8 months at a time. At this time, if you want to maintain the efficacy, you can inject it again. In addition, if you want to keep the effect for a long time after the face-lifting needle, you should reduce or alleviate the movement of the masseter muscle after the injection, and eat less hard and elastic food, such as melon seeds and chewing gum. There is no scar on the appearance after injection of face-lifting needle, which does not affect normal skin and muscle function and normal life and work.