Combination Skin comprises both skin types, oily and dry. Like, the t-zone's appearance is oily, shiny, and with bigger pores. But other parts of the face can appear dry or sometimes flaky. It's difficult to land on the right products for this skin type. But, there are a few ingredients that can help. Hyaluronic acid is hydrating yet it doesn't leave an oily finish as it's quick to absorb. Other examples are Salicylic and Lactic acid. The former helps with oil regulation and the latter deals with gentle exfoliation.