I can vouch for the granuloma effect. My girlfriend had it in her NLs and developed terrible granulomas which had to be removed by a cosmetic surgeon. I would suggest Radiesse as a longer-lasting filler. It is made from calcium hydroxyapatite which is, over time, broken down and carried away by the body. (Calcium hydroxyapatite is a naturally occuring substance.) Radiesse lasted 8 months in my NLs.
Thanks Antonia for your info about Radiesse, I will certainly do my research on Google. About your friend, having her granulomas removed by the surgeon, did it leaves scars? And do you know how much it cost her to remove the granulomas.
I knew the granulomas can be removed, but it's to find the "good" one who can do this!