I had a complex about my square jaw, so I had chin Botox treatment. I had it done 3 times. The first time wasn't very effective, but the 2nd and 3rd time did have a big effect . But the square jaw was reduced , but my face changed to look like a peanut. After that, I stopped getting Botox altogether . I think it's better to test whether it fits your face well and if you don't think it fits, don't do it.