Face slimming injections work once, only it is not permanent, it is an injection that requires multiple sessions to have a maintenance effect. The following is to say how many times a face slimming injection can be shaped. 1, some people say that the injection three times the basic shape, which is not true. The injection in the face slimming needle is botulinum toxin, the principle is to play botulinum toxin to control the contraction of muscle tissue, so as to achieve a thin face effect. But the thinning needle is the need to consolidate the injection, generally play the first time the thinning needle, in 1 to 2 weeks of time you can see the more obvious thinning effect, 1 to 2 months or so the peak of the thinning effect, after the injection of about 4 to 6 months the effect will gradually fade, you can play the second thinning needle, this time the effect will be more obvious, may be maintained for 6-8 months. When after three injections, the maintenance time is longer. 2, late maintenance is also important, do not eat too hard food. Face slimming needle is not like many people say, you need to play every six months or it will fail, but not three injections after the thin face is permanently set, the late maintenance also determines whether the effect of the thin face needle lasting. So basically, after playing three times the skinny face injection will be maintained for a longer time, and the late maintenance should also keep up, pay attention not to eat spicy food with you do not apply irritating products after the injection to ensure that the effect of shaping.