There are a lot of popular oils out there and when choosing one for your face, there are a few things you need to keep in mind. Oils rich in linoleic acid are lighter in weight and better for congested, oilier skin types, whereas oleic acid is thicker, richer and more hydrating, ideal for dry and mature skin types. Camellia and rosehip oils are very commonly found in face oils, but there are distinct differences between them.