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Cassia Bark
Cinnamomum cassia

Plant Origin: China
Method: Steam distilled from leaves and twigs
Cultivation: Unsprayed (grown organically but not certified)
Chemical Family: Aldehyde
Aroma: Sharp, strong, spicy, sweet, woodsy

Key Constituents
Cinnamaldehyde 90.63%
Cinnamyl acetate 2.55%
Coumarine 1.98%

Children? Not suitable for children under 2 years old (potential skin irritant)
Pregnancy/Lactation? Not suitable (Tisserand/Young)

Cassia's aroma is very similar to Cinnamon Bark, but they are chemically quite different. Cassia has been used for indigestion, gas, colic, diarrhea, rheumatism, colds and flu (Lawless). Click here for CO2 Cassia.

Pregnancy/Breastfeeding: Avoid use.

Dermal Caution: Cassia contains 75-90% cinnamaldehyde that is the cause of the Cassia's potent dermal sensitizer and irritant. It is not recommened for use on the skin at more than 0.05%. Avoid topical use on hyersensitive, diseased or damaged skin and on children under 2 years of age.

Oral Caution: Diabetes medication, anticoagulant medication, major surgery, peptic ulcer, hemophilia and other bleeding disorders.

Avoid contact with the eyes and other sensitive areas. Essential oils are both lipophilic and hydrophobic. Lipophilic means they are attracted to fat—like the membranes of your eyes and skin. They are also hydrophobic, meaning they do not like water. Flushing with water will only send the essential oil back to the eye's membranes. Applying a carrier oil will create another fat for the essential oil to be attracted to other than the membranes of the eyes or skin. We’ve not known this to cause permanent injury or long-term discomfort, but if you feel concerned, please call your health care provider.

Battaglia, Salvatore, The Complete Guide to Aromatherapy, 2002, pages 319.
Lawless, J., The Encyclopedia of Essential Oils,1992.
Tisserand, Robert; Young, Rodney, Essential Oil Safety: A Guide for Health Care Professionals, Elsevier Health Sciences UK 2nd Edition 2014, pages 152-153, 235-236.