Short answer
Oud (agarwood) is the dark, resinous heartwood that forms in Aquilaria and Gyrinops trees in response to injury and infection; oud oil is distilled from it. It smells woody, leathery, animalic, smoky and sweet in varying proportions, and it is among the most expensive materials in perfumery. Because wild trees were heavily overharvested, every species of both genera has been listed in Appendix II of CITES since 2004, so international trade needs permits. Much oud now comes from cultivated, deliberately inoculated trees, and most "oud" in Western perfumes is an accord built from other materials. In the Middle East and South Asia, oud is a central perfume tradition in its own right.
What oud is
Healthy agarwood is pale and nearly odorless. When the tree is wounded and infected, it produces a dark, fragrant resin that saturates the wood. That resinous wood is burned as incense (bakhoor and chips), worn as oil, and distilled into oud oil. Character varies enormously with species, region, the age and quality of the wood, and the distillation — from clean and woody to heavily animalic and fermented.
| Factor | Effect |
|---|---|
| Species and region | Different trees and terroirs give different profiles |
| Wild or cultivated | Cultivated, inoculated trees supply most oil today; wild oils are scarce |
| Wood grade | Resin content and age |
| Soaking and distillation | Fermentation before distillation adds animalic, "barnyard" notes |
CITES and trade
All species of Aquilaria and Gyrinops are listed in CITES Appendix II. An Appendix II listing does not ban trade; it requires that international trade be legal and sustainable, with export permits issued after the exporting country finds that trade will not harm the species' survival. For a perfumer, that means:
- Buy from suppliers who can document legal origin and, for imports, the CITES paperwork.
- Record origin, supplier and permits with the material.
- Check how the listing applies to the form you buy (wood, oil, finished products) for your trade route.
Sourcing precautions for expensive naturals are in how to source perfume raw materials.
Oud accords
Most perfumes labeled "oud" use an accord, for cost, consistency and supply reasons, sometimes with a little natural oil. Accords typically combine:
- dry and smoky woods, and woody-amber aroma chemicals; see woody notes in perfumery;
- leathery and animalic notes; see building a leather accord;
- resinous, medicinal and slightly fermented facets;
- cypriol (nagarmotha), which has an oud-like woody-smoky character.
The classic pairing is oud and rose; saffron, sandalwood and amber are other common partners. See how to make a rose accord and sandalwood in perfumery.
Working with natural oud
- Smell every lot before buying; ouds differ more than almost any other material.
- Expect adulteration risk at the price; ask for a constituent profile and buy from sellers who state species and origin.
- Use it in small amounts — a little natural oud transforms an accord.
- Check allergen and restriction information from the supplier; the oil is a complex mixture.
Oud in perfume traditions
In the Gulf states, South Asia and Southeast Asia, oud is worn as oil, burned as incense, and layered with other perfumes. Concentrated, alcohol-free perfume oils are part of the same tradition; see what attar is and oil-based perfume concentration. Oud sits among the woods in perfume materials by odor family.
Common mistakes
- Buying expensive oud without a sample, or without knowing the species and origin.
- Adding natural oud at high levels to an accord; a small amount usually does more.
- Calling an accord "oud oil" in marketing; describe what is actually in the product.
Sources
- CITES — Appendices I, II and III (Aquilaria spp. and Gyrinops spp. in Appendix II), checked October 9, 2026 (link format; CITES Plants Committee documents confirm the 2004 listing).
Frequently asked questions
Why does some oud smell like a barnyard?
Fermentation of the wood before distillation, and the oil's natural animalic compounds, can give strong farmyard notes. Some connoisseurs prize them; Western perfumes usually tame them.
Is synthetic oud "fake"?
An oud accord is a composition inspired by the material, like a rose or muguet accord. Describe it honestly; claim natural oud only if you use it.
Written and reviewed by the RUŌOD Lab team. This article is general education about perfume formulation and record-keeping; it is not legal, regulatory or safety advice, and the examples are illustrations, not validated commercial formulas. How we write and check these guides.