Generally, don't eat for six hours after injection, which requires doctor's advice. The effect can be seen after 7 days of injection of face-lifting needle, and the peak of face-lifting effect can be reached after 3 months. The one-time effect can last for more than half a year. If you need to maintain the effect, you can inject it again after half a year. After two or three times, the face is basically fixed. In order to maintain the fixed shape of the masseter muscle after contraction, minimize the movement of the masseter muscle, eat less hard and tough foods, such as fragrant sugar and melon seeds, and avoid eating more.

Face-lifting needle, that is, botulinum toxin A injection, mainly acts on muscle tissue and is called face-lifting needle because it is often used to solve masseter hypertrophy. The professional name of face-lifting needle is botulinum toxin, which is a biological product and can be produced on a large scale through genetic engineering. Because of its nerve blocking effect, it is very commonly used in neurology, ophthalmology, plastic surgery and cosmetic surgery.