When you inhale an essential oil, the molecules go into your nasal passage to the olfactory system. From there, they move to the limbic system, which deals with your bodyβs emotions, memories, and physical response. The limbic system also influences the Endocrine System and Autonomic Nervous System. The Endocrine System contains glands that secrete hormones into the blood stream. These hormones act like chemical mediators that regulate body function such as mood, metabolism, and development. The
Autonomic Nervous System regulates instinctive bodily functions such as heart rate, respiration, perspiration, and digestion.
Through topical application, essential oil particles are absorbed into the bloodstream and dispersed. Some components can pass through the blood brain barrier and to the limbic system, where they can influence the Endocrine and Autonomic systems. When applied topically, the essential oil molecules affect the body, skin, muscles, joints, and organs by penetrating the skin, entering the dermal layer and interacting with blood and lymph vessels, connective tissue, and sensory nerves.