The first thing to consider is the ingredients: always look for a sunscreen that contains Zinc Oxide and Titanium Dioxide and doesn't contain oils, fragrances, or PABA's. The best sunscreens are also non-comedogenic and, most of all are light. Basically, most of the Korean sunscreens can be considered suitable for oily skin, especially the ones that use Tinosorb S and Tinosorb M, two ingredients that are still not have been approved by the FDA in America and other associations in the rest of the world but that is extremely good for our skin.