There is really no good way to tighten skin. If excess skin is part of the aesthetic problem, at this point in time only surgicaly removal works. You have had some volume of the face removed (the liposuction and buccal fat removal). This is somewhat unconventional in this day and age. Most plastic surgeons try to preserve volume in the cheeks. Nevertheless, it sounds like you have been left with a skin envelope that is in excess. I doubt you will be pleased with any of the "tightening" technologies. In my opinion, they don't work.
vz




