Radiesse or hyaluronic acid to camouflage my retrognathia?

I have a great deal of experience with Radiesse and began using it regularly for all kinds of augmentation procedures, including for chin, many, many years ago when it was first called Radiance. I have also been injecting HA fillers for many years, as well. The advantage of Radiesse was that its results typically lasted about 1.5 years. However, with time, with the introduction of robust HA fillers whose results also lasted about 1.5 years. I stopped using Radiesse, since it cannot be easily be dissolved by any means as can HA fillers with the enzyme hyaluronidase. So, my go-to choice for some time now for chin augmentation (as well as cheeks, jawline, temples, etc.) would be a robust HA filler. Hope this helps. Best of luck.