Had double chin all my life. Decided on Kybella after much research. Had two treatments so far. First one 5/6/16 and second 6/9/16. Results started 4 weeks after 1st injection and saw improvement slowly over the last 4 month. Will be getting a third treatment soon. I was very swollen (like a bullfrog) for about 3-4 days after both injections, but I was not in any pain.