Monoterpenes: One of the many terpenes, monoterpenes (the
smallest of the terpenes, although one of the most widely occurring) are mostly
found in essential or volatile oils. Aromatherapists use monoterpenes as a mucus
membrane tonic as decongestants and to ease nasal and other mucus membrane
Monoterpenes evaporate easily and have a low boiling point.
Monoterpenes are mostly colorless and odorless, prone to oxidation. Oxidants
from monoterpenes could be irritant.
Monoterpenes are antiseptic,
antiviral and bactericidal.