Localized soreness and distension after face thinning injection is a normal reaction, generally the most obvious symptoms 1-3 weeks after the injection, and then will gradually disappear. Generally there is no need to deal with it, and the symptoms can be alleviated by improving dietary habits and living habits. The active ingredient of face slimming injection is botulinum toxin, the main effect is to inhibit the transmission of nerves, weaken the movement of chewing muscles, and then reduce the volume of chewing muscles, so that the appearance of the lower part of the appearance of the effect of thinning. 1. Avoid biting hard food such as beef jerky, Konjac strips, etc., and avoid repeated chewing behaviors such as chewing gum, otherwise the feeling of soreness and swelling will be further aggravated. 2. 1 week after the injection, avoid strenuous exercise, drinking alcohol, sauna and other activities that lead to a sharp rise in body temperature, so as to avoid high temperature and excessive dispersion of the drug for a short period of time, which will aggravate the feeling of soreness and swelling in the face. Generally speaking, the feeling of soreness and swelling will gradually subside after 1-3 weeks of the injection. If jaw movement disorder occurs, it is recommended to go to a regular medical institution for timely consultation.