Creosote oil, derived from wood or coal tar, is primarily used as a wood preservative, protecting against pests and decay. It’s also utilized as an industrial fuel. Medically, creosote oil from the creosote bush can treat acne, hemorrhoids, and wounds, and provide headache relief and sun protection. Additionally, it serves as an insect repellent and has been historically used to flavor meats. Despite its benefits, creosote oil, especially the coal-tar variety, is toxic and should be handled with care. Always follow safety guidelines when using it to avoid potential health risks.