Essential oils contain the essence of the plant from which they are harvested. This comprises the plant’s aroma as well as its therapeutic qualities and traits unique to medicinal plants. Essential oils have healing properties that are taken in by the body through the nose’s olfactory system. When essential oils are applied to the skin, their healing properties are absorbed through the pores and hair follicles and into the bloodstream. Essential oils should always be stored in aluminum or glass bottles that are airtight and dark amber in color, and kept out of direct sunlight and at room temperature.