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 often used in neurology, ophthalmology, plastic surgery and cosmetic surgery.

In addition, the possible side effects can be summarized as follows:

1. Although face-lifting needle has many advantages, the side effects of face-lifting needle exist, the most common ones are asymmetry on both sides or muscle weakness at the injection site.

2. If the face is excessive, it may cause the side effect that the face-lifting needle is difficult to swallow.

3. The common side effect of face-lifting needle is that the face will become stiff and laugh unnaturally. Bidai Syulan was exposed to a face-lifting needle because of his unusually stiff face when attending the event.