Identifying your skin type is made a lot more difficult by the all-encompassing combination skin type. Almost everyone at some time or another, if not all the time, has combination skin. Physiologically, the nose, chin, center of the forehead, and the center of the cheek all have more oil glands than other parts of the face. It is not surprising that those areas tend to be oilier and break out more frequently than other areas. Problems occur when you buy extra products for combination skin, because many ingredients that are appropriate for the T-zone (the area along the center of the forehead and down the nose where most of the oil glands on the face are located) won’t help the cheek, eye, or jaw areas. You may need separate products to deal with the different skin types on your face because you should treat different skin types, even on the same face, differently.