“Doesn't last very long for me but i like it!”

I get Perlane injections into my lips every 3 mos. now to plump them up.I get 1 syringe each time.I had tried 2 but it costs too much to maintain at 500$ a syringe and it hurt really bad; I think it over-filled.The pain was bad for 3 days I thought my lips were going to explode and fall off! With just the 1 syringe it just stings a bit for the first day.I do get alot of bruising at times though and it's swollen for about 2-3 days.
I like the results are instant,but for me it only lasts 2 mos.(they said usually it lasts 6-12 mos.) so I wonder if it's just my body;maybe I absorb things quickly? I do like the look however, so I go thru the expense to maintain it and my doc freezes my lower face(like the dentists do) so pain is minimal.The next time I am also going to try a syringe to fill in the "puppet lines" going from my nose to my chin.I am 40 years old.