Can Sculptra or Radiesse be dissolved?
Haute Living's answer is no where hyaluronidase is concerned: "Sculptra and Radiesse cannot be dissolved with hyaluronidase." That one sentence settles the question as the source states it.
What else is on that list
Haute Living widens the point: "Sculptra (poly-L-lactic acid), Radiesse (calcium hydroxylapatite), and permanent fillers (silicone, PMMA) cannot be dissolved with hyaluronidase and do not have equivalent reversal agents." The second half of that sentence is the part to notice. These products also lack an equivalent reversal agent, so there is no matching undo.
Reading on these fillers and their complications
The ASPS has an article on the rising popularity of non-hyaluronic acid fillers, and PMC hosts The Demographics of Patients With Dermal Filler Complications.
Before the injection
Ask which product is going in and keep a record of the answer. Readers in St. Johns, Florida, who notice a change after a visit can give that product name to their provider when they call.