Micro-plastic face-lifting is generally, and injecting face-lifting needle is a good method. Usually, a biological product called botulinum toxin is used to inject masseter muscle, and the injection amount is only 1% of the maximum safe dose, so the safety is guaranteed. Micro-plastic experts say that botulinum toxin can block muscle conduction, reduce the tension of masseter muscle, and greatly reduce its contractility. Then the masseter muscle will partially contract, and the volume will gradually shrink, thus achieving the purpose of face-lifting.