Sculptra is injected in areas of hips or butt where correction or volume increase is desired. Sculptra injections induce collagen and create volume over the course of several weeks after injection. Sculptra can also be used to enhance the shape and smoothnes of the treated area. In contrast a BBL butt lift uses your own fat, harvested from another part of your body, to provide volume. Sculptra buttlift is a non-surgical procedure.