LY face-lift injection is actually an injection of botulinum toxin. This botulinum toxin acts on muscle tissue, so it is often used to solve the symptoms of lumbar muscle hypertrophy. The technical name is botulinum toxin, which is a biological product that can be mass-produced through genetic engineering. Because of its nerve-blocking effect, it is very commonly used in neurology, ophthalmology, plastic surgery, and cosmetic surgery. In essence, botulinum toxin injection is used to treat the phenomenon of masseter muscle hypertrophy, so as to obtain the ideal face slimming effect.