マッサターボトックス (顎スリミング)

Masseter botox uses botulinum toxin to weaken and gradually atrophy the masseter — the prominent jaw muscle that becomes overdeveloped through chronic clenching, grinding, or genetic factors. As the muscle atrophies over 4-8 weeks following injection, the lower face narrows visibly, creating a slimmer V-shape or oval contour. The treatment also relieves chronic jaw clenching, teeth grinding (bruxism), and TMJ-associated pain.

The procedure has both aesthetic and functional applications, making it one of the few injectables routinely used by both cosmetic and dental/medical practitioners. East Asian aesthetic markets (South Korea, Japan, Thailand) heavily feature masseter botox as part of "V-line" treatment plans — typically combined with chin filler or jaw filler to achieve the desired tapered profile. Each session uses ~20-30 units per side (depending on muscle bulk); results last 4-6 months and require maintenance.