They say it works if, when you clench both sides of your jaw hard and bite down on your molars, you have a lot of muscle bulging out on both sides of your jaw. Someone I know showed me their before-and-after photos, so I was tempted and ran straight to a nearby dermatology clinic.
Since I might need to get it 2-3 times, I spent a hefty 100,000 won like a sucker and got German-made Botox that supposedly does not cause resistance.
It's been about 3 weeks now... I can definitely feel that there is less muscle bulging out when I bite down on my molars... Functionally, too, my jaw used to feel uncomfortable often and make sounds, but that has eased, so I'm satisfied....
But then I realized... my face's problem was not only my jaw muscles, sob sob. Aesthetically, there hasn't been any improvement, but still, I definitely feel that it has improved a lot functionally, so I'm quite satisfied.