PROS - Used it several times to fill out laugh lines and a little on the upper lip which has gotten a bit thin (I'm 45). Really nice results and lasts a good length of time.
CONS - It travels! Each time I've done it, around 3 months later, I get bumps in different areas of my face--temples, cheek etc. (They really sullied my complexion) The only way to get rid of the bump is to lance it and out comes the substance.
But I will still use it because the pros outway the cons.