Aromatherapy is often understood as a single practice, yet it encompasses a rich and sometimes confusing range of approaches, from massage and diffusion to inhalation and internal use. This guide offers a unifying framework for understanding both the simplicity and complexity of aromatherapy. The book also sheds light on key topics such as essential oil purity, home use, integrative healthcare, and the role of aromatherapy in supporting trauma and mental health. At the heart of aromatherapy are three essential elements: the essential oil, the person, and the interaction. By exploring how these elements work together across different levels of human experience, including physical, sensory, mental, emotional, and spiritual, Jonathan Hinde reveals why essential oils have such wide-ranging applications. He discusses the different routes of absorption, with practical techniques grounded in a deeper understanding of how and why they work. Combining theory and practical examples, this is an invaluable resource for both beginners and experienced practitioners seeking a holistic understanding of aromatherapy.