Undecided Question

How to get rid of really really really oily skin? (:?

I have mixed white & carribeaan skin that is soo oily its unbelievable! I use bare escentuals mineral powder foundation & I use a mud mask soap thing to cleanse my skin. I don't over cleanse or anything & I have an oil free moisturiser. My skin is just naturally oily due to hormones & genetics. Is there anything I can do? & I've heard of this thing called Milk Of Magnesia. Does it work? & I LIVE IN THE UK, so I can't visit sally beauty or anything. Thanks in advance (: