I got Bellafill 2 yrs ago. Three months later I developed pain and swelling. This resolved except for occasional flareups, but since that first episode my cheeks have looked too big (they looked perfect before that). I know 5FU/kenalog can help but are they long-term solutions? If my immune system overreacted to the product before, what's to stop it from happening again? And if the problems do recur, can they be successfully treated the same way again?