Not sure about PMMA. My early injections over the last couple decades (i think '05 was my first) were Sculptra (PLLA),
Sculptra is not available here, so when we needed something in '17, we went with Aesthefill, also a PLLA from Singapore.
Last year we switched to Radiesse, which i will probably use in a couple months, as it's easier to get here in the provinces. My concern with PMMA are the microspheres ??
Dumaguete, Negros Oriental