Kybella, why only 6 rounds maximum? I had a "moderate to severe" double chin. (photo)

As long as you are still seeing results with Kybella, you can go beyond 6 treatments. However, there may be a different procedure that might be better for you so discuss options with your surgeon. 

Thank you for your question.  I am sorry you are not seeing the results you would like with Kybella.  It seems as if you have had a reasonable treatment, as 2-3 vials per treatment is typical.  If you have not sen the results you wish after 5 treatments, I would consult with a board certified facial plastic or plastic surgeon for other options to help with this fullness under the chin.  You may be a good candidate for submental liposuction and/or a neck lift.  The studies for Kybella looked at patients who had up to 6 treatments, and that is why this is the 'maximum'.  It most likely is safe to have more than this, it is simply that this has not been studied as of yet.  I hope that this helps!-David Gilpin

In looking at your photos, you probably have some fat behind the muscle under the chin that will not be dissolved by Kybella. To some degree, if you are satisfied with the improvement, you can continue with further Kybella treatment. If you want to eliminate the double chin in a more dramatic fashion, I would recommend submental liposuction and platysmaplasty and possibly a necklift to remove excess skin. I have not seen patients with severe fullness obtain excellent results with Kybella alone. Usually, a combination approach is necessary whether invasive involving surgery or non-invasive treatment.