
Is getting a瘦脸针 (facial slimming injection) effective for masseter hypertrophy?
I am dissatisfied with my facial轮廓 (contour), and I've heard that getting a slimming facial injection might resolve this issue, but I'm concerned about its effectiveness and safety.

Masseter muscle hypertrophy can affect the facial contour, making the face appear wider and larger. As a common facial aesthetic treatment, slimming injections primarily contain botulinum toxin, which blocks the signal transmission between nerves and muscles, causing the masseter muscle to gradually relax and atrophy. Therefore, for individuals with masseter hypertrophy, injecting slimming needles can effectively reduce the size of the masseter muscle to some extent, thereby improving the facial contour and achieving a face-slimming effect.
However, the effects of slimming injections typically become noticeable within a few weeks and are temporary, usually lasting between 4 to 6 months. Repeat injections may be necessary afterward to maintain the results. Therefore, patients should be prepared for long-term maintenance.
In addition to receiving slimming injections, adjusting lifestyle habits can also help improve masseter hypertrophy. For example, maintaining good chewing habits and avoiding excessive chewing of hard objects, as well as performing targeted masseter muscle massage and exercises.
It is recommended that prior to considering this treatment, one should first consult with a qualified plastic surgeon or cosmetic doctor for a comprehensive facial assessment. The doctor will evaluate your individual condition to determine whether you are a suitable candidate for slimming injections and develop a personalized treatment plan.