Essential oils are natural aromatic compounds found in the seeds, bark, stems, roots, flowers, and other parts of plants. Their fragrance can be both beautiful and powerful. If you have ever enjoyed the gift of a rose, a walk by a field of lavender, or the smell of freshly cut mint, you have experienced the aromatic qualities of essential oils. Essential oils can lift the mood, calm the senses, and elicit powerful emotional responses. Yet the use of essential oils goes well beyond their fragrant appeal.