Will Radiesse spread or expand to fill lower face? Still hollow next to mouth

Radiesse will neither spread nor expand.  I recommend that you wait until the swelling and bruising have subsided and revisit your concerns with your injector.  If replacement of lost facial volume is your goal, something like Sculptra or Voluma may be more beneficial. 

Hello there,Thank you for your question.  As I can see swelling and bruising still, your final result is not visible yet.  It usually takes about 2 weeks for the swelling to decrease and up to 4 weeks for full results.  If you're still not happy with the hollowness in the cheeks, I recommend discussing Sculptra or Fat Grafting with your provider.  Please make sure he or she is a board-certified physician with extensive experience in the treatments.  Hope this helps.All the best,Carlos Mata, MD, MBA, FACSBoard-Certified Plastic Surgeon

Radiesse doesn't move or migrate. Swelling can be typical and can last 1-2 weeks after injections. If you remain concerned about your results, I recommend following up with your Doctor. In the mean time, venus legacy treatments may help reduce swelling. See an expert. Best, Dr. Emer