Depending on how much of the product is injected, Voluma has been FDA approved to last for up to 2 years. With that being said, every patient metabolizes the product at a different rate. Unfortunately, there is no way to predict exactly how long it will last for you. Ulthera will not have any effect on the Voluma and is not the correct treatment to dissolve it. If you are looking to erase the effect completely, you would need to look into getting hyaluronidase injections such as Vitrase. I recommend scheduling a follow up appointment with the doctor who performed the Voluma injections. That way they can assess you in person and you can both work together to decide how to best address your concerns.
How to remove Voluma in the cheeks?
Ultherapy has not been shown to be effective or reliable in filler removal. There is a medication that is intended to dissolve excess Hyaluronic Acid fillers like Voluma that is marketed as "Wydase" AKA Hyaluronidase. Injections of Hyaluronidase does carry a modest cost but it is usually quite effective. Good luck!
My best advice would be to consult a board certified dermatologist with experience with facial cosmetic injections and have the Voluma dissolved slowly. Thermage and Ulthera will not dissolve the product. These lasers tighten the skin and product new collagen. Best, Dr. Green
Ulthera would not reliably break it down. I think this is a discussion you should have with your filler injector. You may benefit from Hyaluronidase, bit by bit, then rebuild from there.
All the best
Dr Davin Lim
Laser and aesthetic dermatologist