Botox for a Slimmer Jawline

I have a square jawline that makes my face look big, especially in photos. My twin sister discovered a Botox treatment injected into the jawline. It relaxes the muscles in that area and softens the look of big jaws. We did it together in three sessions, three weeks apart. The results were instant and subtle. I didn't look like a completely different person overnight ... just thinner.

A year later, I suffered from lock jaw. I was in a restaurant with my friends, chewing on my meal ... when my face froze. I couldn't chew or talk. I lost control of my jaw muscles. This lasted about 10 minutes, and my face began to function normally again. I was frightened though and although I need a "touch up" two years later, I'll just let it be for now. My sister also experienced lock jaw at the same month I did.