Oily skin is acne-prone skin with open pores, a shiny complexion, blackheads, and pimples. Because hormones affect oil production, anything that changes your hormone levels may affect your skin. Some experts believe stress may trigger outbreaks of acne. Acne itself may stress you out.
Combination skin is simply having oily skin in some areas of your face and dry skin in other areas. Typically, there's a mix of oily and dry areas on different parts of your face, with the t-zone (forehead, nose, and chin) being slightly to very oily.
Dry skin is an uncomfortable condition marked by scaling, itching, and cracking. It can occur for a variety of reasons. You might have naturally dry skin. But even if your skin tends to be oily, you can develop dry skin from time to time. Dry skin can affect any part of your body.