I got it in February. I got it with a friend at Lienjang. I thought the effect would be short-lived because it was an event, but it seems to last about 5 months. My jawline suddenly showed miraculously, but I heard that it didn't have this effect. But I heard that it was because I was dieting at the time, so I don't know if it was the effect of botox, but I felt less of the muscles that formed when I clenched my teeth. My younger sibling had a very severe square jaw, so they got it 5-6 times on one side, but I got it 3 times on the left side and 4 times on the right side. I didn't have any swelling, didn't feel pain, and don't get bruises easily, so I was hungry after getting it and ate dinner right away. My younger sibling and my mom said they felt a little numb. It was cheap, but it didn't last that long and it didn't seem to be very effective, so I'm thinking about getting it again.