Will the slimming face injection have a rebound effect?

Under normal circumstances, with proper post-injection care, there may be no rebound effect after receiving a facial slimming injection. However, if post-injection care is neglected, a rebound effect may occur. It is recommended to choose a reputable hospital for facial slimming injections to ensure safety. Detailed analysis is as follows:

The main component of the facial slimming injection is botulinum toxin for injection, which blocks nerve-muscle signal transmission, relaxes overactive muscles, and achieves a facial slimming effect. For facial fat caused by masseter muscle hypertrophy, if hard foods are avoided and masseter muscle activity is reduced during the effective period, and healthy eating habits and lifestyle are maintained after the effect of the injection diminishes, the slimming effect may last for a long time and even show no obvious rebound.

If poor lifestyle habits are maintained after receiving the injection—such as frequently chewing hard foods, staying up late, or neglecting dietary management—it may lead to a rapid recovery of the masseter muscle. Additionally, improper injection dosage or placement could cause excessive facial muscle paralysis, potentially affecting facial expressions and function, which may result in a rebound effect.

After injection, chewing hard foods should be avoided, and the injection site should be kept clean to prevent infection.