To prevent oily skin you must follow some simple steps
*Wash your face twice daily.
*Use skin products which is made for oily skin.
*Cleansing and scrubbing may help to remove the dead(old) skin.
*Wiping your face with a good astringent can help to remove the oil.
*Reduce stress, oily food.
*Keep a good diet containing fresh fruits and vegetables.
*Wear sunscreen, powder, sun-glass, hat whenever you go out.