You may be eager to learn just how to treat oily skin, but to really understand what works and why, you need find out why your skin becomes oily in the first place. There is a lot of information out there, but most of it is actually misguided. I am sure that you have heard some people talk about how chocolate, soda and lots of other types of food can lead to oily skin and acne.  But the truth is, there is plenty of scientific proof that shows that your diet has nothing to do with it.  In reality, your skin gets oily when too much of a compound, known as sebum, starts to collect on your skin.