Is it safe for a dermatologist to do Sculptra or is it better for a plastic surgeon?

A derm or a plastic surgeon can inject with solid quality results. Experience and training is important and you should ask about both during your consultation. Good luck. Dr. ALDO 

Thank you for sharing your question.  Both board certified plastic surgeons and dermatologists are excellent options for your Sculptra injector so I would see the before and after images of their patients in order to make the best decision.  Hope this helps.

You want to go to an injector who is trained, experienced, and comfortable with the product.  That injector is not necessarily a doctor.  Ask about experience and to see before/after photos.  You should be comfortable with your injector before beginning treatment.