Oily skin isn’t a bad thing. It contains ceramides, fatty acids, and other crucial elements that retain moisture and protect your skin barrier. However, when there’s an overproduction of sebum, its composition is slightly different. It’s a bit glassier, and the oil can appear more yellow versus clear. If you want to change your skin’s oil composition, hydration is vital. When your skin is adequately hydrated, it produces different oils that make your skin look plump and dewy, never greasy.