Extremely oily skin. I'm going to the derm tomorrow. What should I ask him\would he prescribe me?

I just want to solve this oily face problem, it's been bugging me a lot. So, I'm going to the derm tomorrow. What should I ask him to prescribe me? I don't want him to be giving me low strength creams that will end up useless. It's gonna cost me a bomb so it better be worth. Any suggestions for real creams that'll work from the derm? Thanks