Face-lifting needle, that is, botulinum toxin A injection, is often used to solve masseter hypertrophy, which can be produced on a large scale through genetic engineering and is often used in neurology, ophthalmology, plastic surgery and cosmetic surgery. Botulinum toxin injection is mainly used to treat masseter hypertrophy, and then it can reduce masseter atrophy by denervation, which makes the treatment more thorough. After the face-lifting needle is injected, the skin at the injection site will be slightly red and swollen, which will subside after a few hours. Only a few people will have slight congestion, but it will soon disappear, so beauty seekers don't have to worry. In addition, the skin of the face will tighten, so for middle-aged and elderly people with loose skin, we often liposuction their cheeks to tighten their skin. The contraction of other subcutaneous fibers can also cause facial tension. Therefore, the face-lifting needle has been carefully deployed, and there are few sequelae.