Cinnamon oil is an essential oil extracted from the bark of the cinnamon tree. It has a warm, spicy, and sweet aroma. It is known for its energizing and stimulating properties, and has been traditionally used to help with fatigue, mental clarity, and concentration. Cinnamon oil is also believed to have antimicrobial properties, which may make it useful for treating certain skin conditions and also it is commonly used to add flavor to food and beverages. Cinnamon oil is typically used in aromatherapy, massage, and as a flavoring agent in food and beverages. It is considered safe for most people when used topically in small amounts, but it's always best to do a patch test before using it and to consult with a healthcare professional before using it internally, as large doses can cause skin irritation, and other adverse effects.