The main component of the face slimming injection is botulinum toxin type A, which is suitable for people with large bilateral bite muscles, to achieve the purpose of face slimming by reducing the size of the bite muscle. botulinum toxin type A is available in domestic and imported, and the effect maintained by the drug after injection is generally 4-6 months, which varies from person to person. Botox is used to block the transmission of neurotransmitters to the surface of the bite muscle, which is not stimulated for a long time, so that the muscle can gradually atrophy. According to clinical observation, the effect of botulinum toxin is maintained in 4-6 months, usually 3 times, each time about 6 months apart. In terms of the effect of the drug, the entire bite muscle will be basically shaped down after 2-3 times. If there are no special circumstances, such as often high melon, eating hard things, chewing gum and these exercise bite muscle problems, after 3 times to play can be maintained for 1 year to 1.5 years. However, it is important to note that the maintenance effect of this face slimming method is not permanent. To achieve better results, do not wash your face with water on the day, do not steam sauna, drink alcohol, and usually do not eat hard things. When injecting face slimming needles, be sure to find a professional doctor for injection, otherwise it is easy to have a stiff face, seriously affecting the effect of thinning the face.