Everyone has their own levels of oil on there face and body. We have lots of oil glands on our faces. Some are more inclined to have oily skin than others. You can minimize it by using products designed for oily skin. Wash your face twice a day with warm water and a mild soap. No more than that, it will just make your produce more oil. Hormones can affect this as well, and you may find that the problem changes as you age.