This is a great question, however unfortunately there is currently not creams or pills available that are going to enhance your buttock. Currently there are only three ways to augmentation your buttock. First is diet and exercise, secondly is the Brazilian Butt Lift and lastly buttock implants. I would stay away from any creams or medications that claim to enhance your shape. Before starting any medications consult with your doctor to make sure that they are safe.
The Brazilian butt lift (fat transfer to the buttock) is so popular because it enables your plastic surgeon to transform your entire shape. Liposuction is performed over several areas depending on the individual patient needs, but typically of the flanks, abdomen, back and thighs. You currently have a very square shape (which is more common than most people realize).
The butt implants are a good option for patients that are too thin for the Brazilian Butt Lift and want to enhance their shape. The implants give patients a good option.
I hope this helps.