Both these products can be used safely and effectively for augmenting a weak chin. Using one product over another is injector preference. The injector should be able to educate you on the postives and negatives of each product. Together you can make a decision for the best filler to address your concerns. There are advantages of using a hyaluronic acid product over Radiesse. Hyaluronic acids like Juvederm can be broken down if for some reason you do not like the results. If you love what the filler has done to improve your chin, you may want to consider a chin implant done by a qualified, experienced facial plastic surgeon for permanent results and less costly in the long run.
Radiesse is the best option for a temporary chin enhancement, it’s a lot thicker than Juvederm to help build the chin, the result should last 12-14 months