Oud

NaturalWOODS & MOSSESwoody · animalic · smoky
BasePyramid
4/5Strength
—Tenacity
6Origins
Specimen
Oud perfume ingredient
Base
Aquilaria malaccensis Aquilaria crassna
Definition

Wet leather, barn floor, overripe fruit left in temple smoke. Oud is the resinous heartwood of fungus-infected Aquilaria trees — a pathological secretion that reads simultaneously sacred and feral, shifting character with every origin, every distillation, every hour on skin.

Woody
85
Animalic
95
Smoky
70
Medicinal
45
Sucré
40
Leathery
90
AGARWOOD ALOESWOOD EAGLEWOOD JINKO BOIS D'AGAR OUDH
Instruments
Pyramid
TTop
HHeart
BBase
4/5Strength
High
odour strength
Producing countries
Cambodia India Indonesia Laos Malaysia Vietnam

Scent

The opening hits sharp and medicinal — iodine, Band-Aid, something fermented and slightly fecal. This is the part that polarises. Within minutes the animalic blast yields to wet leather and smouldering temple incense, with a sweetness underneath that shifts between overripe stone fruit and dark honey. Vietnamese and Laotian distillations lean into that sweetness early; Cambodian oud reads rounder, with a confited-fruit quality; Assamese oud stays austere, leathery, almost confrontational. Compared to sandalwood, which is creamy and linear, oud is angular and unstable — it keeps moving on skin. Compared to vetiver, which stays rooted and green, oud drifts toward the animal and the sacred. The dry-down is balsamic, smoky, and extraordinarily persistent.

Terroir & Maturity

Indicative 2025 wholesale prices.

The Full Story

Oud — agarwood resin — is the woody-resinous backbone of contemporary niche perfumery.

Oud is not wood in the conventional sense. It is a wound response. When Aquilaria trees — primarily A. malaccensis, A. crassna, A. sinensis — are colonized by fungi (Phaeoacremonium spp., Lasiodiplodia theobromae, among others), the tree saturates infected tissue with aromatic resin. The resulting heartwood, dense and dark, is what perfumers call oud. Natural infection occurs in roughly 7–10% of wild Aquilaria populations, though plantation inoculation has altered supply dynamics significantly since the early 2000s.

The oil’s chemistry splits into two major classes. Sesquiterpenes — agarospirol (CAS 1460-73-7), jinkoh-eremol (CAS 94201-17-9), α-eudesmol, guaiol, bulnesol — provide the heavy, animalic, woody backbone. 2-(2-Phenylethyl)chromones contribute the sweet, honeyed, incense-like qualities. The ratio between these two classes varies by species, geographic origin, infection stage, and distillation method. Cambodian oud (A. crassna) tends sweeter and more chromone-heavy; Assamese oud (A. malaccensis) leans harder into the sesquiterpene end — drier, more leathery, more confrontational.

Distillation is slow and wasteful. Traditional producers soak wood chips in water for weeks to months, fermenting the material before hydrodistillation. Yields hover around 0.01–0.02%: sixty to one hundred kilograms of infected wood for ten to twenty millilitres of oil. CO₂ extraction produces a rounder, less animalic profile. Molecular distillation is emerging as a third option for fractionating specific odor qualities.

In composition, oud anchors the base. It provides longevity that can outlast the wearer — detectable on fabric after forty-eight hours or more.

Related Notes

Discover more: Sandalwood, Saffron, Incense.

Related notes: Cedarwood · Ebanol · Hyraceum · Iso E Super · Javanol · Leather · Patchouli · Sandalwood

Extraction & Chemistry

Extraction method

Hydrodistillation of infected Aquilaria heartwood, typically preceded by prolonged water soaking (two weeks to three months) to ferment the material and develop additional aroma compounds. The soaking liquid itself is sometimes redistilled. Wood is chipped or ground before loading into copper or stainless steel stills. Distillation runs last anywhere from five to fifteen days. Yields are punishing: 0.01–0.02%, meaning 60–100 kg of infected heartwood produces 10–20 ml of essential oil. CO₂ supercritical extraction offers a softer, more rounded profile with higher chromone representation. Molecular distillation is a newer technique for isolating specific fractions. Plantation trees are artificially inoculated with fungal cultures (Phaeoacremonium spp., Lasiodiplodia theobromae, or mixed inoculants) and typically harvested after 5–8 years of infection development. Wild trees may carry infections for decades before harvest.

Formula
Complex — Sesquiterpenes (Agarospirol C₁₅H₂₆O · Jinkoh-eremol · α-Eudesmol · Guaiol) + 2-(2-Phenylethyl)chromones C₁₇H₁₄O₂
Botanical
Aquilaria malaccensis Aquilaria crassna
Appearance
Dark amber to brownish viscous liquid
Odour strength
High
Synonyms
AGARWOOD ALOESWOOD EAGLEWOOD JINKO BOIS D'AGAR OUDH
IFRA status
No restriction

No restriction. CITES Appendix II (trade regulated, not banned).

Physical properties
Flash point
141.00 °F. TCC ( 61.00 °C. )

In Perfumery

Base note anchor. Oud operates as a fixative, a signature material, and a compositional axis simultaneously. It provides animalic depth and substantivity that few naturals can match — persistence on fabric measured in days, not hours. The oil’s dual chemistry (sesquiterpenes for structure, chromones for sweetness) makes it self-sufficient in a way most base notes are not: it carries its own contrast. Oud appears in amber, woody-amber, and oud-centric compositions. In Middle Eastern perfumery it functions as a soliflore subject. In Western niche, it typically plays backbone to rose, saffron, or amber accords. No single synthetic reproduces the full oud profile. Spiralwood™ approximates the dry-woody quality. Most commercial ‘oud’ fragrances rely heavily on these reconstructions, reserving natural distillate for trace amounts or marketing copy. Plantation-grown Aquilaria with artificial fungal inoculation has partially addressed supply constraints since the mid-2000s. Purists maintain wild-harvested oil from mature infections remains superior — heavier in chromones, more complex in its animalic character.

Role in the formula
01fixative
02backbone
03volume builder
04signature note
Available as
essential oil

See Also

5 notes