I usually grind my teeth a lot and have a strong chewing force, so my jaw muscles are developed, but my square jaw stands out even if I don't have any skin on my face, and I did it after hearing that Botox would help with bruxism a little, but I expected it to alleviate bruxism rather than for a cosmetic effect. I don't know about relief, but it's great for beauty... I saw the effects right away on the 3rd day after getting it. Even though I didn't diet, people around me said I was slimmer and asked me if I was on a diet. When I took pictures, my face line was so soft and my muscles weren't lumpy when I closed my hems, so it's good. Factory type. I got it from a plastic surgeon, and I highly recommend it because the factory type seems to have a lot of experience since they perform the procedure on a lot of people. So, I chew a lot on my right side, so my right masseter muscle has developed a lot, so they made it symmetrical on that side. I really want to do it again. I took a domestic shot, but they say that if you take a foreign shot, you won't develop resistance... In fact, after watching YouTube and stuff like that, it seems that if you take it at the right timing, you won't develop resistance, and as long as you don't take it too much, you'll be fine... I got it last summer, and now I'm entering a new summer. .. I chewed a lot of hard things and it came back, but it's not as hard and bad as before.. I'm going to go get it again this year..