Biological & Anatomical Mechanism
Neurotoxin injected into the lower two-thirds of the masseter reduces hyperactive isometric clenching force. With reduced work demand, the muscle fibers undergo physiological disuse atrophy, thinning the lateral jawline angle while preserving normal chewing ability via the temporalis and pterygoid muscles.
The Plastic Surgeon Advantage
The masseter muscle is in close anatomical proximity to the parotid duct, facial nerve branches (marginal mandibular), and the superficial risorius muscle (which pulls the mouth into a smile). Inexperienced injectors who inject too superficially or too anteriorly can freeze the risorius, creating an asymmetric or crooked smile. Dr. Purohit’s deep surgical understanding of facial anatomy ensures absolute safety.
Ideal Candidate Profile
- Individuals with a wide, boxy, or square lower face due to enlarged jaw muscles.
- Patients seeking a more feminine, oval, or heart-shaped facial taper.
- Those suffering from facial heaviness caused by chronic teeth clenching.
- Anyone wanting facial slimming without invasive jawbone shaving surgery.
Essential Aftercare Protocol
- Do not massage or press the lower jaw corners for 48 hours.
- Avoid chewing tough, chewy foods (hard nuts, tough meats, chewing gum) for 2 weeks.
- Remain upright for 4 hours following the injection.





