1, the thinning of the face refers to the injection of botulinum toxin to make part of the bite muscle atrophy, so as to achieve the effect of face thinning 2, this thinning of the face generally two weeks after the start of the effect, some people began to take effect in a month, can generally be maintained for 3-6 months, after the bite muscle began to gradually recover 3, in the beginning of the recovery is recommended to re-injection of thin face, in order to achieve long-term maintenance effect, so each time can only be maintained for 6 months. So it is not permanent, and there is absolutely no so-called three times permanently set. 4, but long-term injections, may extend the maintenance time, the author’s experience, most long-term injectors, generally can do an average of 8-16 months injection. 5, after the injection precautions: immediately after the injection pressure 15 minutes, 6 hours to avoid the needle hole touching water, 1 month ban on massage face, 3 days after the makeup can be Summary of the main points: half a year injection, each time maintain about half a year, long-term injection, an average of 8-16 months to inject once Fast to achieve long-term maintenance effect tips: 4 months after the first injection supplemental injection, supplemental injection 5 months after re-injection Then 6 months after the first injection, then 6 months after the second injection, and later on according to the recovery of the bite muscle.