Wood tar is a thick, dark liquid produced by the destructive distillation of wood, particularly from coniferous trees like pine and fir. This process involves heating wood in the absence of oxygen, which breaks down the wood into various components, including tar, charcoal, and volatile gases. Wood tar has been used for centuries in various applications, including waterproofing and preserving wooden structures. In addition to its preservative qualities, wood tar contains compounds that have antiseptic properties, making it useful in traditional medicine and veterinary practices. It is also a key ingredient in products like soap and varnish, contributing to their effectiveness and durability.