Hi Arellano Estephany,
I dont think rubbing any oils is going to make your butt bigger. Genetics play a major role in the butt size and shape and of course weight.
Surgical options like a Brazilian Butt lift ( fat grafting) to the butt or buttock implants can help get you the shape you want.
Also some butt or gluteal exercises can help make them more firm and round.
Thank you for your query
Dr.Surindher ...
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