The cassia plant leaves are steam distilled to obtain this cassia oil BP. This pharma grade oil when used in aromatherapy or medicine is helpful in easing depression symptoms, improving blood circulation, controlling blood sugar levels, and promoting the digestive health. The sweet, warm and spicy oil is great for aromatherapy as well. The fragrance of cassia oil will remind people of fresh cinnamon rolls. This oil blends well with other oils to create several unique essential oil diffuser blends.