This drug is not FDA approved in the United States.
I do not recommend chemical fat destruction or injections to destroy fat cells for fat removal.
These procedures tend to be highly unpredictable, especially in comparison to well done Liposuction.
Liposuction is the gold standard and the best...
It will destroy your face. You need this facial volume. I personally think that the hyaluronic acid filler you placed is part of the problem and would counsel you to remove it. Please consider psychological help before you let a well meaning surgeon harm you irreversibly.
Probably best to undergo the functional surgery first, heal up from that, and then consider undergoing any type of cosmetic procedure. A full set of facial and neck photographs are required to make a bet the best determination for what is the appropriate procedure for you. It's also very...