No they're are essentially the same thing just different carriers suspending the
PMMA. The body metabolizes the carrier then encapsulates it with collagen.
I had
Bellafill then Linneasafe, same with tmartins304 and a few other users. People ask the same thing about mixing other fillers like
HA &
Radiesse. No complications, but maybe if you had
HA and were worried that later on you would need a touch up as the body absorbs the
HA faster in other areas. But that won't happen with
PMMA since it's permanent.