Are you curious how oils work in the brain?
The brain has a blood brain barrier that is the filtering mechanism between that and circulating blood. The barrier prevents substances from reaching the brain tissue and causing damage. The ability to cross the blood brain barrier is imperative for treatment of brain related issues.
Essential oils have chemical constituents call sesquiterpenes which are known to be able to go beyond the blood-brain barrier. Sesquiterpenes can directly interact with brain cells and impact the brain therapeutically. They are also known to interact with neurotransmitter receptors, especially dopamine–the reward center and serotonin–the mood regulator.
Some oils high in sesquiterpenes are frankincense, copiaba, patchouli, cedarwood, and sandalwood. Sesquiterpenes are antiseptic and anti-inflammatory, and they deliver oxygen rich molecules to the brain cells!
Learn more about essential oils here.