People generally think that mixed skin and oily skin are the same. Many beauty products are advertised for both skin types. Although they are similar, you need to understand the differences. Both skin types have an excessive amount of grease in the T zone, which can lead to acne and dilated pores in this area. Both oily and mixed skins have grease in the forehead, chin, and nose. Mixed skin types are often dry or normal around the cheeks, while oily skin types have grease all over the face.