Guaiac resin is a natural substance derived from the wood of the guaiac tree, primarily found in the Caribbean and South America. This resin has a rich, aromatic scent and is often used in perfumes and incense. It is also known for its medicinal properties, traditionally used to treat various ailments. In addition to its aromatic uses, guaiac resin has applications in the field of medicine, particularly in laboratory tests. It is a key ingredient in the guaiac test, which helps detect blood in stool samples, aiding in the diagnosis of conditions like colon cancer or gastrointestinal bleeding.