Can Botox Be Used for Buttocks Enlargement?

Botox will not augment anything, except, perhaps, the income of the provider that suggested Botox for buttocks enlargement to you.
Your own fat can be used to augment the buttocks. A procedure called fat transfer or lipo-augmentation can be done to enhance the appearance and projection of both the buttocks and the breast.
Botox is a neuro-toxin, and is used to relax skeletal muscles of the face in order to reduce fine lines and wrinkles.

There is no indication for Botox Cosmetic injection into the buttocks. Botox works by paralyzing the underlying muscles in the face to smooth out wrinkles in the overlying skin. Injecting Botox into the buttocks would have no effect on lifting the butt or adding volume - It may make you walk funny, however. Other things can be injected into the buttocks, such as fat grafts. Good luck.