Fillers that are good for contouring the bony facial skeleton are Bellafill, Voluma, Radiesse, and Restylane Lyft. Bellafill is a longer lasting filler which comes in smaller 0.8cc syringes.
Yes, the jawline can be improved with fillers, like Bellafill, and/or Sculptra. Keep in mind, it will take several months for results with Bellafill. See a facial sculpting expert for an evaluation. Best, Dr. Emer