Pictured here is beta-caryophyllene, a chemical component in the sesquiterpene family. Essential oils high in sesquiterpene tend to be more emotionally grounding and calming. These oils tend to be heavier, typically middle to base notes with a longer-lasting aroma. This is because sesquiterpenes decrease their volatility (evaporation rate).
Sesquiterpenes are known to work as liver and gland stimulants because of the chemical components caryophyllene and valencene. Studies have shown that sesquiterpenes can pass the blood-brain barrier, enter brain tissue, and increase oxygen around the pineal and pituitary glands. Sesquiterpenes such as chamazulene and farnesol are highly anti-inflammatory and antibacterial. At the same time, farnesol is known to be anti-viral in action. Chamazulene is found in German chamomile, tansy, and yarrow.
