Face slimming injections, refers to Botulinum toxin (Botox) injections. Compared to Botox, which is used for wrinkle reduction, the difference between the two often lies in the difference in dose. The principle of face slimming with Botox is this: the drug can block the nerve impulses between nerves and muscles, paralyzing the overdeveloped muscles to make them contract, it is the use of paralysis of muscles to achieve the purpose of “dysfunctional atrophy”, so that the original hypertrophy of the enlarged muscles shrink. The botulinum toxin injection is also an injection of botulinum toxin in the muscle hypertrophy, so that the muscle relaxation, atrophy, bite muscle activity is reduced, atrophy become smaller. In general, the injection of botulinum toxin a week to observe the face gradually thinning to achieve the “thin face” effect. Two or three months later, the effect of face slimming reaches its peak, the bite muscle can be reduced by about 30%, the effect can last for about six months.