A liquid Brazilian Butt Lift (BBL) involves using injectable products such as Sculptra, hyper-dilute Radiesse, hyper-dilute Belafill, or Renuva injections to enhance the appearance of the buttocks, while a cupping BBL involves using a suction device to increase blood flow to the buttocks and promote a temporary increase in volume. A liquid BBL provides much longer-lasting results than cupping, but both procedures are non-surgical and do not involve fat transfer.