Buttock augmentation can be performed with your own fat (buttock fat grafting or Brazillian buttock lift) or with an implant. There are some who have silicone injected into their buttock but this often results in significant complications. Buttock fat grafting works great and has the added benefit of providing reduction of fat in the areas where there is too much (free liposuction). The ballpark cost of buttock fat grafting is between 7-10 K for surgeon, anesthesia, and operation room cost.All the best,Dr. Remus Repta