How Oud Became Fragrance’s Most Complicated Note

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Oud’s path from rare resin to coveted perfume note reveals a story shaped by forest origins, shifting demand, and the changing ethics of luxury fragrance.

When Tom Ford launched Oud Wood in 2007, he shifted a fragrance ingredient steeped in Middle Eastern culture into the heart of Western luxury perfumery. Oud, a highly prized and expensive fragrance ingredient derived from the resin of agarwood trees, had perfumed mosques, temples, and homes across the Middle East and Asia for centuries. In Ford’s hands, it became modern luxury: smoky, sleek, and unisex.

Before Oud Wood, oud rarely appeared in Western perfumery. When it did, it was considered too heavy, too foreign. Ford’s gamble worked; he turned a regional tradition into a worldwide fascination. Within a few years, Dior, Versace, and Gucci followed suit. Oud Wood became the reference point: the fragrance that made the rare note both aspirational and wearable.

The market responded in kind. Today, the global oud extract sector is valued at $1.89 billion, projected to nearly double by 2032, according to recent estimates.

What is oud?

Oud begins deep inside the trunks of Aquilaria trees. When these tropical trees, which grow in Southeast Asia and Northern India, are wounded or infected by a particular fungus, they produce a dense, dark resin as a defense mechanism. That resin eventually saturates the heartwood, creating the fragrant material known as agarwood.

Tom Ford Oud Wood.

But this reaction is extraordinarily rare. Scientific reviews estimate that only about ten percent of wild Aquilaria trees naturally produce the resin that becomes agarwood. The process can take decades and depends on specific environmental stressors — meaning most trees live and die without ever forming the precious heartwood.

That scarcity translates directly to price: true oud oil can sell for thousands of dollars per kilogram, sometimes surpassing gold by weight. Its creation is as much a biological marvel as an artisanal one, extracted slowly through distillation methods passed down through generations.

What does oud smell like?

Oud is often described as warm, resinous, and shadowy — a scent with enough richness you can almost see it. Depending on where the agarwood was harvested, it can lean musky, leathery, balsamic, or gently sweet. Perfumers often emphasize that no two oud oils smell exactly alike because each species of Aquilaria develops its own aromatic fingerprint. Agarwood grown in Laos from Aquilaria crassna tends to produce an oil that feels dense and feral, with woody, nutty undertones. In contrast, Aquilaria sinensis — the species native to China — often yields a smoother profile, softer at the edges and touched with a natural sweetness.

To many, the first impression of oud evokes earth after rain or the scent of old timber breaking down in a forest. The comparison isn’t accidental: perfumers say the aroma recalls decomposing wood, humus-rich soil, and the rot that feeds new growth. Christina Christie, senior perfumer at Givaudan, likened it to stepping on a fallen log and breathing in that sudden rush of damp, mineral-heavy air rising from underneath. Oud can feel elemental in that way — raw, unvarnished, and deeply tied to the natural world.

Logged forest.
Dan Smedley

Those who’ve smelled oud in well-known fragrances — whether it’s the regal intensity of Armani Privé Oud Royal, the assertive clarity of Initio Oud for Greatness, or the silkier elegance of Maison Francis Kurkdjian Oud Satin Mood — often note that while the compositions differ wildly, the oud signature is unmistakable. Once you’ve experienced it, the note becomes instantly recognizable: a dark, resinous hum beneath everything else.

On its own, oud can be polarizing, even overwhelming; used within a composition, it adds structure and gravity. Perfumers say this is why it pairs so well with leather notes, saffron, and smoky resins. It deepens florals, grounds ambers, and turns even simple blends into something with a sense of mystery.

The price of rarity

Oud’s rise from sacred wood to global commodity has come with ecological costs. As demand surged through the 2000s, wild Aquilaria forests across Southeast Asia were stripped bare. The United Nations added multiple Aquilaria species to its list of plants protected under the Convention on International Trade in Endangered Species (CITES).

A 2025 study found that roughly 70 percent of the global agarwood trade relies on just two threatened species — Aquilaria malaccensis and Aquilaria filaria — and that 97 percent of A. filaria and 57 percent of A. malaccensis traded between 2010 and 2020 came from wild trees rather than plantations. “It’s quite clearly not sustainable,” agarwood trade expert Ian Thompson told Mongabay earlier this year. “Until they get good data on enforcement and populations, the trees are going to continue to decline.”

In response, plantation cultivation has become essential. According to CITES, “the total number of plantation trees may have exceeded 60 million in 2022.” Thailand, Vietnam, and Indonesia now host managed agarwood farms where trees are inoculated with fungi to mimic the natural infection that produces resin. These plantations reduce pressure on wild forests and offer rural communities a sustainable income source.

Agarwood tree
Agarwood tree.

But despite those efforts, the legal trade recorded under CITES — the global wildlife-trade convention — captures only a fraction of what is actually moving across borders. Researchers found millions of kilograms of agarwood exported to African nations in customs records that never appeared in CITES data, suggesting a vast, undocumented flow. Even within the CITES database, import and export figures often contradict one another, a discrepancy experts interpret as evidence of widespread illegal harvesting and underreporting.

Weak enforcement compounds the problem. Many countries have regulations designed to protect agarwood-producing species, but these rules are rarely enforced effectively. Outdated or incomplete non-detriment findings — the assessments required to prove exports are sustainable — mean that many exporting nations operate with little reliable population data. “Wood crosses borders quickly and easily,” Thompson said. “Without better enforcement everywhere, illegal wood will continue to flow.”

While plantation-grown agarwood has expanded rapidly in recent years — Thailand and Vietnam alone manage tens of millions of cultivated trees — demand for wild material remains exceptionally high because it is perceived to be of superior quality. Even species like Aquilaria crassna, now sourced more than 99 percent from plantations, face ongoing pressure because wild agarwood still commands premium prices.

Researchers urge a broad overhaul: expanding CITES listings to cover overlooked endangered species, updating conservation assessments, standardizing product categories, and using scientific tools — like DNA barcoding and isotope testing — to verify sourcing. It also calls on wealthy importing nations, particularly those in the Gulf, to invest in conservation rather than merely consuming the resource.

Ultimately, researchers stress that sustainability requires more than cultivated trees. It demands transparent supply chains, meaningful enforcement, updated scientific data, and consumer choices that favor ethically sourced oud. Without intervention, the true scale of the illegal trade — larger than either CITES or customs figures indicate — will continue to drive threatened agarwood species toward collapse.

The rise of synthetic oud

For many modern fragrance houses, especially those positioning themselves as clean or sustainable, synthetic oud has become an essential part of the palette. These aromachemicals — including ingredients like agarwood lactones, guaiacwood derivatives, Iso E-leaning woods, cypriol/nagarmotha extracts, and amber-smoke molecules — can recreate oud’s depth and darkness while drastically reducing ecological pressure.

Synthetic oud isn’t a compromise so much as a creative opportunity. While it can’t fully replicate the organic complexity of natural oud — which contains hundreds of interwoven aroma compounds — it gives perfumers greater control over intensity, longevity, and tone. It also allows for a cleaner formulation footprint: many synthetic oud accords are inherently phthalate-free, vegan, and free of animalic byproducts. For brands focused on environmental responsibility, synthetics offer a way to honor oud’s aesthetic while sidestepping the unsustainable realities of the global agarwood trade.

Best oud fragrances

Formulators are reimagining the note through transparency—paraben-free, cruelty-free, and often consciously sourced.

Clean Reserve Sueded Oud.

CLEAN RESERVE
Sueded Oud

Dossier Fougere Oud.

DOSSIER
Fougere Oud

Thameen Oud perfume.

THAMEEN
Carved Oud Extrait de Parfum

francis kurkdijan perfume oil.

MAISON FRANCIS KURKDJIAN
Oud Eau de Parfum

Boy Smells perfume.

BOY SMELLS
Peachy Oudy Eau de Parfum

Amber oud spray.

ALKYMIST
Amber Oud


Salt + Stone spray.

SALT + STONE
Black Rose & Oud Body and Hair Fragrance Mist

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