Sculptra is paid for up front, and your habits afterward decide how soon you pay again. Utah Facial Plastics names the habits it blames for wearing results down, and that short list is the place to start.
Sun and smoking as named by the clinic
Utah Facial Plastics ties two habits to a weaker result: "Lastly, environmental factors such as sun exposure or smoking may affect Sculptra’s efficacy since they can cause free radical damage that may ultimately break down the filler substance."
Read the hedge. The source says "may affect", and it gives free radical damage as the route. It describes a risk, not a guaranteed loss.
The same publisher turns it into instructions
Further on, Utah Facial Plastics gets blunter: "Sun damage can counteract the effects and results of Sculptra treatments over time. Moreover, avoid tobacco products and limit alcohol consumption."
As a checklist, that is sun protection, no tobacco and less alcohol. Sun shows up in both passages, so fix that one first.
Where the cost shows up
A result that is counteracted over time is a result you may pay to revisit sooner than planned. That is the maintenance cost most quotes leave out. The clinic's own write-up, how long Sculptra lasts at Utah Facial Plastics, is the source for everything above. For measured outcomes of the material itself, a PMC paper collects volumetric data on poly-L-lactic acid in facial rejuvenation.
What to bring to your consultation
Tell your provider how much sun you get, whether you use tobacco and how much you drink. Ask how those answers change the number of visits the plan assumes before you accept a price.