The use of cassia essential oil dates back to Biblical times and is recorded in the Bible. It was considered a sacred oil in ancient times. It is a powerful oil which is very harsh if used directly on the skin undiluted, but it has a powerful effect if used in aromatherapy.
Cinnamomum cassia is also known as "Chinese cinnamon" and is the cinnamon spice familiar to the United States and Europe. The rest of the world actually uses "Ceylon cinnamon" for its cooking and therapeutic uses.
In either case, cassia/cinnamon is aromatically spicy, and very helpful for many types of respiratory ailments, digestive problems, and muscular distress.
One home remedy for cassia/cinnamon is to add a drop of the oil to a dab of honey, spread on toast or wafer and eat. This is said to assist the heart and circulation.
Cassia (Cinnamomum cassia)
Botanical family: Lauraceae
Extraction: Steam distilled from bark
Properties: Antibacterial, antifungal, antiviral
Cautions: Caution for pregnancy; do not apply neat topically as it is harsh on the skin, and may cause irritation