The effect of face-slimming injections is not permanent. After a few injections, the body of a few people will develop antibodies against Botox, making subsequent injections ineffective. Due to chewing habits, there will still be slight asymmetry on both sides after the injection. A small number of people may be insensitive to the drug and the effect may not be obvious, so a follow-up visit should be made after 2 weeks. Botulinum toxin injection for face slimming is reversible, which means that after 3 to 6 months, another injection is needed to maintain the effect. In order to obtain the best face-slimming effect, do not massage the face after the injection, do not lie down immediately, and do not shake your head all the time. Hard nutty foods should also be avoided as much as possible, because these will affect the postoperative effect, so beauty seekers need to pay attention . Generally speaking, the face slimming effect will be obvious within 1-2 weeks, but depending on some people's physical constitution, it may take 3-4 weeks to see the effect. You can rest assured that there will be no side effects from face slimming injections. But we remind you that you must go to a regular specialized plastic surgery hospital for face-lift injections. Only by experienced doctors controlling the injection dose and injection point can the effect of the surgery be guaranteed.