Cleaining the fretboard of Majesty Monarchy

I own a Majesty Monarchy which has a polished ebony fretboard. In time sweat and dead skin residue build up on the fretboard and I am not sure how to clean it. I would use my lemon oil on a rosewood fretboard but I have no experience with polished ebony fretboards. My fear is to damage the polish. What is a proper way to clean it? Thanks!