The slimming injection, also known as botulinum toxin, is mainly the endotoxin of type A botulinum toxin. In the case of slimming, the botulinum toxin is usually injected into the masseter muscle of the face. Generally, 30 units on one side are sufficient. After injection, due to the loss of neural control of the local muscle, the exercise becomes weak, achieving the effect of muscle atrophy and slimming the face. Some people may experience jaw weakness and soreness one week after injection, especially when biting hard things like nuts, dried fruits, and beef and mutton, feeling weak. This is the effect of the slimming injection, and not everyone has this experience; some people may have this feeling, which will disappear after a week, and normal biting can be achieved.

For the slimming effect, the face becomes significantly smaller, which is generally more obvious after 3-4 weeks of injection. Depending on the dose of injection and the brand of the drug, there may be slight differences. The effect can be maintained for 5-7 months. If you want to maintain a good slimming effect, it is recommended to have two injections a year.

After the injection of the slimming injection, the A-type botulinum toxin used in the injection will take effect within about a week after entering the masseter muscle. The masseter muscle tissue cannot contract. One month after the injection of the slimming injection, the masseter muscle tissue will produce atrophic atrophy, the volume of the masseter muscle will decrease, and some slimming effects can be seen. Three months after the injection of the slimming injection, the effect of this atrophic atrophy reaches its peak, the volume of the masseter muscle reaches the best effect, and at this time, the slimming effect of the slimming injection is the best.

The botulinum toxin used for slimming the face usually has an efficacy period of 3-6 months. During this period when the drug is effective, the muscles are relaxed and atrophic, achieving the goal of slimming the face. After 3-6 months, as the efficacy of the drug gradually diminishes, the muscles will gradually repair to their previous level, and the face will slowly become larger again, returning to its previous appearance. Therefore, it is recommended to receive the slimming injection twice a year. After receiving the slimming injection, the actual effect can be seen within 3-5 days, and the real effect that can highlight the appearance should be from half a month to one month. If it is continued, the effect is relatively sustained.