If you are having a chin implant, it makes more sense to use submental liposuction (if you are otherwise a good candidate) than Kybella. The advantage of Kybella is that it is non-surgical. It's an injection performed in the office. As a Kybella trainer, I have been pleased with its efficacy. However, it does require multiple treatments that can have noticeable bruising and swelling, especially after the first treatment. So if you are having surgery to place a chin implant, it makes sense to perform submental liposuction at the same time, since there is already anesthesia (even local), down time, risk, and expense associated with the chin implant. Thanks for your question.