Added sugars- limit your consumption of soft drinks, jam , jelly, pan cake syrups, frozen desserts and commercially sold cakes and pastries. They contain added sugars such as corn syrup, honey and plain sugar with high glycemic index which can increase your blood sugar levels, which leads to increased oil production.
Salty snacks- A diet high in sodium damages health by increasing inflammation. Salty snack food such as potato chips and french fries often contains inflammatory trans-fats.
Enriched flour- It ois derived out of its nutrients and fiber content, as a result enriched breads, cereals, pasta and baked foods digest inefficientls, and have higher effect on your blood sugar and contributes in increased oil production.
So, start avoiding these foods and improve in your complexion to a great extent.