I had seven sessions od Sculptra at two highly recommended clinics and was told that the results take a while to appear. After nearly two years I'm still waiting!
My last (very skilled and experienced) practitioner (who has medical qualifications) has written several times to Sculptra asking if some of the money could be refunded. So far they have refused. I was assured at the beginning of both sets of treatments that this is a highly successful technique. Others contemplating having it be warned!