Sculptra can do a beautiful job of creating a smoother, rounder and more lifted buttocks area. While the difference in shape and beauty can be substantial, the amount of volume you would want to add in the buttocks with Sculptra is limited. If you desire a dramatic change in volume, a traditional BBL would be the answer. If you want something youthful and rounded and natural looking, then I'd recommend Sculptra. It is very safe in the buttocks if it is diluted properly and injected smoothly. It is an advanced technique that could be lumpy with improper placement. Sculptra works by stimulating your body to produce the collagen that ultimately leads to its aesthetically pleasing results. The Sculptra microparticles dissolve as they are replaced by your body's new collagen. Results can last up to two years. Please find a board-certified dermatologist who is expert at contouring the buttocks with Sculptra to help you.