Sometimes known as two-way cake, compact foundation, twin cake or pressed powder. They all mean the same. Compact powder provides coverage to your skin. It helps you hide imperfections and even out your skintone. After applying the compact powder, it will gradually blend with your natural face oil to create a flawless look on your skin. If the compact powder doesn't blend with your face oil, then the product doesn't suit your skin or it is simply lack of quality. You can tell if it doesn't blend well when the compact powder gets cakey.