How Does an Essential Oil Clear Your Skin and Improve Your Mood? Essential oils are good for many different purposes. Sometimes it seems like they are too good to be true, but trust me, they are very effective! For instance, grapefruit essential oil is great for working with adolescent melancholia and acne. It is cold-pressed from the rind of the grapefruit. You can apply it topically to troubled areas of the skin as a cleanser. In this way, you can take it in through the