Square jaw botox + contour injection 1 time review

I've always had a square jaw treatment once every 5 months, and I didn't think it had much of an effect, but there was a time when I didn't get it for a year and it became completely square. I think I felt the effect of Botox for my square jaw at that time. So, I've been getting it regularly since then. I heard that contouring injections need to be administered at least three times to be effective, but for financial reasons, I only had one injection and it didn't really work. Later, I looked into contouring injections and found out that they also had side effects, so I haven't had them since.