I suggest you wait about 2 weeks before you assess your results. If at that time you still don't see any improvement, return to your injector and discuss your concerns.
Generally, Juvederm Ultra
Plus XC lasts for approximately 9-12 months, but this can be shorter or longer depending on your body. I recommend you see your injector again and discuss your concerns with them. Hyaluronidase can be used to dissolve any residual filler or another treatment may be more...
There is no direct chemical intereaction between the Silicone you had and a new filler such as Juvederm or Restylane if it were injected. The Silicone is permanent and the hyaluronic acids just mentioned are temporary. There can be, and I have seen a reaction, of Silicone years later after the...