Organic Thieves Oil is created in small batches by mixing 5 key, organic essential oils- Rosemary, Lemon, Cinnamon, Clove and Eucalyptus in a base or Organic Fractionated Coconut Oil. This listing is for one 15ml/.33oz roll-on in black glass and stainless steel roller. Popular amongst Health Care workers, applying Thieves Oil to clothing and body is believed to create a shield of immunity against germs. According to legend, Thieve's Oil was used by four grave robbers in the 15th century. During the Bubonic Plague, the thieves created a blend of essential oils they applied on their clothes and bodies that would allow them to pick through graves without catching the illness.