How Long Should 3 Syringes of Radiesse Last?

3 syringes of Radiesse may cover the cheeks alone. 2 syringes covers the nasolabial grooves and 1 syringe covers the marionette grooves. That is a rough estimate of the amount of radiesse needed in many patients. It is time to go back and get the other syringes of radiesse done. I know it is a lot and it is expensive but it should last about a year or more when you get enough put in, otherwise you are just wasting your money by underfilling the areas. I normally do it in 2 or more sessions anyway. A rough estimate of cost is $850/syringe.
If you liked the initial swelling after radiesse then you will like the end result when you finish the job by getting the other syringes of radiesse.

Radiesse should last up to about a year, but when you are treating the whole face, multiple syringes are needed in order to create a visible and lasting improvement. Dividing 3 syringes among all of those areas may have given you a modest improvement that was likely exaggerated initially with the post treatment swelling. After the initial swelling subsides, the results can look much less impressive due to the small amount that was used for filling multiple areas of the face. It can usually take 1-2 syringes for each one of those areas alone to achieve a lasting result. I would go back to your injector and see if additional product is needed, which is likely the case. I would also avoid having Radiesse injected at the underage area as that area is very thin and lumps and bumps from Radiesse will likely be more visible.

Most patients with injectable fillers respond better with serial injections.  A one and done serial loading on a day is not as effective in my opinion and can lead to untoward sequlae.  Repeat injection preferably between 6 to 14 weeks will help maximize the effectiveness of your first treatment.