Thank you for your question slesieur. I understand your concern. Kybella is the first and thus-far only FDA-approved non-surgical injectable treatment for the double chin. The double chin can be formed by various factors including age, weight gain, and genetics.It is difficult to make an assessment without a formal exam where I could examine the skin from various angles and feel the amount of fat in the area. However, I hope the information provided here is useful.With any injection, there is a risk for pain, bleeding, bruising, redness, tenderness, swelling, and infection, We take special precautions to minimize these risks. We numb the skin prior to the treatment and apply cold air to maximize our patients' comfort. We treat bruises with a laser as early as the next day. Bruises usually resolve by two weeks and after a laser treatment they usually resolve in one to three days, although it still can take up to two weeks for full resolution. Most people feel a burning sensation for about 15 minutes after the treatment. This is addressed by placing cold compresses on the area which we provide in our office.The most common concern for our patients after a treatment is swelling, which occurs 100% of the time and I feel that this is an indication that the treatment is working. Swelling can be asymmetric, meaning that there may be more swelling in one area than another area; this is normal and not cause for concern. I tell my patients to expect swelling for one to two weeks. Some people describe it as looking like a pelican or bullfrog. Therefore, patients prepare for this by scheduling their treatments at times where they are not planning any special events where they want to look their best. Some people will wear a turtleneck or scarf during this time to hide the swelling. For my patients, I recommend applying cold compresses such as ice packs to the area to reduce the swelling. We provide cold compresses which can be frozen and re-used which attach to a wrap that goes around the neck and crown of the head. Also sleeping on an extra pillow if not uncomfortable will help to reduce the swelling.Please consult with a doctor for specific recommendations. Good luck!