Origin and Extraction OilGuaiacwood oil is extracted from the heartwood of Guaiacum officinale and Guaiacum sanctum, species of trees native to Caribbean islands, Central America, and northern South America. These trees can grow up to 40 feet tall, with dark bark and aromatic heartwood.To produce guaiacwood oil, logs of the dense heartwood are chipped or ground. The woody chips are then placed...