In general, for facial slimming, it takes about a week to have a slight effect, and the energy of the muscles around the medication will weaken, and the volume will decrease slightly. At this time, when eating hard food, it may feel insufficient. Usually, in about 2 weeks to 1 month, there will be a more significant and continuous muscle atrophy, and the effect will become more obvious. However, the degree of muscle contraction, that is, the significant level and time of facial slimming effect, are individual differences, and each person is different.

The purpose of injecting botox is to cause muscle atrophy. It takes time for the muscle to relax to contract, usually about 1 month. Therefore, after the injection of botox, one should not be too anxious and should allow time for repair and for the medication to take effect. After the injection, it may be felt that eating is not strong within one week, or there may be a sore gum, which is actually the medication starting to take effect. However, for the face to become completely thin and achieve the best effect, it takes about 1 month, some people may be faster, around 20 days, which depends on the habit of mastication. Therefore, the botox must go through the process of contraction, and naturally, if it is maintained for 4 months to half a year, the second injection can be carried out.

For patients with facial width or facial obesity caused by prominent biting muscles, many people rely on the injection of botox to achieve the goal of facial slimming. After the injection of botox, whether it is a domestic or imported botox, it can only maintain the effect for 3-4 months. After this period of time, the effect of botulinum toxin will gradually fade, and the atrophied chewing muscles will become prominent again. It is necessary to carry out a second botulinum toxin injection to achieve the effect of facial slimming.

Generally, if the botox injection is performed, it may lead to atrophy of the biting muscles, and after the atrophy of the biting muscles, the actual effect will naturally appear. With the increase of the frequency of injection, the time required for the repair of the chewing muscles will gradually increase, and due to the continuous state of contraction, the chewing muscles can become thinner and thinner. In fact, there is indeed a cumulative effect observed in clinical medicine, for example, after the first injection of botulinum toxin, the chewing muscles may only be half as thick as before, and after the second and third injections, it will be found that the chewing muscles are only 1/3 or 1/4 of the original thickness, which can achieve a cumulative effect.