What should I do if one side of the jaw muscle (masseter) on my face is larger than the other?
For facial asymmetry caused by uneven masseter muscles (one side larger than the other), regular massage of the face may help promote blood circulation and improve muscle condition. Avoid consistently chewing food on one side of the mouth to prevent worsening of the asymmetry. If the asymmetry significantly affects facial appearance, medical aesthetic treatments such as botulinum toxin type A injections, autologous fat grafting, radiofrequency skin tightening, semiconductor laser lipolysis, or surgical resection can be considered at professional medical institutions.
Analysis of treatment options for facial asymmetry due to uneven masseter muscles:
Treatment |
Botulinum Toxin Type A Injection |
Autologous Fat Grafting |
Radiofrequency Skin Tightening |
Semiconductor Laser Lipolysis |
Surgical Resection |
Mechanism |
Blocks the release of acetylcholine at the neuromuscular junction, causing the masseter muscle to gradually relax and atrophy |
Fat is harvested from another part of the body, processed, and then injected into the cheek area on the side with the smaller masseter muscle |
Uses thermal energy generated by radiofrequency to target the larger masseter side and surrounding tissues, stimulating collagen contraction and regeneration |
Laser light of specific wavelengths targets the larger masseter side, rupturing fat cells and promoting their metabolic elimination, while providing mild thermal stimulation to the masseter tissue |
An incision is made inside the mouth to directly remove part of the enlarged masseter muscle on the affected side |
Indications |
Facial asymmetry due to masseter muscle hypertrophy |
Masseter asymmetry accompanied by cheek hollowing on one side |
Masseter asymmetry with mild skin laxity |
Masseter asymmetry with localized fat accumulation |
Severe masseter asymmetry |
Reference Cost |
1,000–3,000 RMB per session |
8,000–25,000 RMB per session |
5,000–15,000 RMB per session |
8,000–20,000 RMB per session |
15,000–35,000 RMB per session |
Advantages |
Simple and convenient procedure |
Improves overall facial contour harmony |
Simultaneously enhances skin firmness |
Reduces fat and shrinks the masseter muscle simultaneously |
Pronounced improvement in masseter hypertrophy |
Potential Risks |
Local swelling, pain, bruising, etc. |
Fat liquefaction, infection, nodules, etc. |
Skin redness, pain, burning sensation, etc. |
Skin redness, itching, pigmentation, etc. |
Bleeding, infection, nerve injury, facial asymmetry, etc. |
Duration of Effect |
4–6 months |
Long-lasting |
1–2 years |
2–3 years |
Long-lasting |
Before undergoing any medical aesthetic treatment for uneven masseter muscles, it is recommended to consult a qualified physician to develop a personalized treatment plan.
