Juvederm in lips CAN be permenant

I have read several questions about Juvederm lasting over 18 months in the lips and even over 3 years.  Well, I had Juvederm (and it WAS Juvederm so please don't suggest that as a reason) 2 YEARS ago.  Prior to that I had a VY Plasty that was done in 1993 which of course, does cause some scar tissue.  I can actually FEEL the Juvederm somewhat embedded within the scar tissue (this was NOT there before).  So after 2 years and it remaining and just slightly going down on the left side, I recently had Juvederm injected on that left side to even up in the hopes that the left side will be a 'permenant' situation.  Hey, I'm not a doctor but I am betting that Juvederm CAN and will embed in scar tissue and remain.  I would be more than happy to be the test example and find out why this DOES seems to happen to certain people.  Perhaps a little research needs to be done instead of just a few of us having to ask questions and go to doctors just to be told that it 'maybe wasn't Juvederm' or look at you like you MUST be exaggerating.