There is a big difference between these two procedures. The gluteal hots/ injections can be very dangerous because it is liquid silicone which is often placed within the muscle and can migrate to deeper levels. Its extraction is very difficult and complicated so it is not a procedure approved for this purpose. On the other hand lifting the buttocks with own fat or Brazilian Butt Lift (BBL) is a much safer procedure where fat is then integrated there will not be greater problems in the future.