They are at the basis of creams, care oils, after-shampoos … and all the emulsions as a whole. They are very often ingredients of natural and organic products, but also of "conventional" cosmetics. They are more than a simple excipient, as they are a very useful source of active ingredients that skins do like! However, which one is the most convenient for your skin or your hair? When is it better to use this or taht vegetable oil? Some clues to use them wisely!