Cassia Essential Oil Cinnamomum cassia Spicy, sweet, and warming, Cassia Essential Oil has a bold cinnamon-like aroma that brings energy and cheer to any blend. Often used in diffusers during the colder months, it helps create a cozy, uplifting atmosphere and may support immune health when inhaled. Suggested Uses: Best enjoyed in a diffuser or aroma inhaler. Use sparingly—just a drop or two adds warmth and spice to seasonal blends. Caution: Dermal application is not recommended due to the risk of irritation. Not for use on children or during pregnancy. For external use only. Available in 5 ml, 10 ml, and 30 ml.u do not see what you are looking for, please ask if we can bring it in for you.