Thank you for your pictures and questions. While Kybella can treat areas of fat excess in the submental area (double chin) it is not FDA indicated for treatment in other areas and does not treat skin excess. Based on your photos, I think you would be much better treated with a more invasive and complete surgical option such as a facelift/necklift. See a board-certified plastic surgeon in your area to see if you would be a good candidate for such a procedure.Good luck!
Kybella is good for improving a double-chin. Keep in mind, a combination approach is needed to get the most improvement with non-invasive options like Kybella. I recommend Kybella with thermage, ultherapy, exilis. VASER liposuction in combination with ThermiRF is a great alternative for contouring the chin, if you're a candidate and can be performed at the same time as a neck lift. I recommend getting a formal evaluation with a cosmetic dermatologist. Best, Dr. Emer