In combination skin, the skin types vary in the T-zone and the cheeks. You find that your T-zone (forehead, chin and nose) produce much more oil than the rest of your face. You also see enlarged pores in this area that are prone to collecting impurities. In contrast, your cheeks are dry to normal. Oily areas are prone to comedones (blackheads and whiteheads). You'd like to regulate oil production and rebalance your skin to have a normalized level of hydration with clear, minimized pores.