Natural oud is derived from agarwood, which happens to be shaped within the heartwood of aquilaria trees in reaction to infection or injury. Because only 2% of this tree species–which happens to be now a safeguarded species–produce the resin, it’s an exceedingly treasured and scarce fragrance ingredient. Image Credit https://music202545444.blog5star.com/36742585/5-tips-about-oud-you-can-use-today