The Bursera Graveolens Tree naturally produces an aromatic non-allergenic resin that only gets stronger with age. This means that only after the tree has completed its natural life cycle—between 40 to 90 years—can the wood be harvested to make all-natural holy wood. This holy wood is what IncaUSA has made available in the form of these Palo santo sticks, where the essential oil of the trees has been retained. Palo santo has a history dating back to the Inca Empire, where it was used in shamanic rituals. The fragrance is similar to that of myrrh with hints of citrus, lemon, pine, and mint. You can still use it to mask the odor of dirty laundry, but know it has a rich history, too.