Rainbow,You can absolutely inject Voluma into the same area that has been injected with another filler. If you are not satisfied with the augmentation in your cheeks using other fillers I would definitely recommend Voluma. Patients love Voluma in my practice. We have seen very nice long lasting results with the product. However, I always counsel my patients that it may take multiple syringes of any filler to achieve the desired result, especially in the cheeks, depending on how volume depleted you are.
Combining injectable products to get your best results is quite common. Let your Juvederm Ultra Plus settle over two weeks then consider adding Voluma if you require more lifting of your cheeks .