I got my first square jaw botox in middle school, and since my jaw muscles were so developed, the muscle reduction effect was really good, but because of that, I didn't think my face was pretty because of the cheekbones and the sunken cheeks. And because my square jaw bone is so developed and sunken, I think my face looks more like a skeleton than a slender face.
However, this could be because I got too much botox or the area, and since middle school and high school, my dentist recommended it for orthodontic treatment, and I didn't notice any sunken cheeks or anything!
And for those who are worried about the cheekbones after getting it, don't worry because the jaw volume will return quickly. I don't have the cheekbones and I think it looks better now.
My jawbones aren't that big, but for those with big muscles, the effect is good, so I think it's worth getting it!