The spice oils are the oils distilled off from the spices at the initial stage before subject to solvent extraction.The spice essential oils are all steam distilled.Black Pepper, Cardamom, Cassia, Cinnamon Bark, Clove, Coriander, Cumin, Dill, Fennel, Ginger, and Juniper Berry all fall under the spice category.Allspice is used to combat headaches, muscle cramps, and tooth pain. Research suggests that this may be due to its eugenol content, which is an analgesic or pain relief agent commonly used in dentistry. In addition, allspice essential oil may alleviate muscle pain and strains by promoting circulation.