How Soon After Fat Transfer to the Face Can I Inject Radiesse?

Wait a minimum of 3 months before making a decision on the need for further filler, such as Radiesse.  I know that patience is difficult at this time, but waiting is the smart thing to do.  Be sure to discuss your concerns with your surgeon.

Yes, you can go ahead with it now since you want more projection. You may need more filler later if the fat goes down even more, but that is not a problem.

It would be one thing to inject a finer filler in places that the fat injections didn't treat, but I would recommend that you wait a few months before adding to the fat injections in the same areas to allow it to heal and reveal its new volume better.

Wait at least 3 months following facial fat grafting prior to even contemplating addtional volume correction. Performing this prior to that could produce secondary deformities when the surgical swelling resolves.

I would echo my colleagues advice to wait several months for edema from fat transfer to resolve before injecting dermal filler. If you're interested in midface improvement and some softening of the nasolabial folds then deep, depot injections of Radiesse over the cheeks can dramatically improve volume. This effects last about 9-12 months.
Best,Stephen Weber MD, FACS