Pogostemon cablin (base plant, heavily processed or fractionated)
Appearance
Pale yellow to amber viscous liquid
Odor Strength
Medium
Producing Countries
Indonesia, Philippines
Pyramid
Base
Patchouli aged, darkened, stripped of green camphor. Dark patchouli is the base note at its most concentrated — earthy, chocolatey, almost tarry, with decades of oxidation.
Deep, earthy, chocolatey, faintly tarry. None of the green-camphor freshness of young patchouli — this is all depth and darkness. Like aged patchouli oil that has spent decades in a glass bottle — the lighter terpenes gone, leaving pure, concentrated earth-chocolate-musk. Warmer and sweeter than fresh patchouli, with a balsamic richness.
Evolution over time
Immediately
Immediately
Deep chocolatey-earth, dark, balsamic warmth
After a few hours
After a few hours
Richer, more integrated, less sharp, warm chocolate-earth
After a few days
After a few days
Extremely persistent — dark patchouli can last days on fabric
The Full Story
Dark patchouli refers to aged or specially processed patchouli oil (Pogostemon cablin) that has been transformed from the fresh oil's green, camphoraceous character into something deeper, darker, and more chocolatey. This transformation occurs through oxidation, molecular rearrangement, and the degradation of lighter terpenes over time.
Fresh patchouli oil is green, camphoraceous, and somewhat minty. Aged patchouli (sometimes 10-30 years old) loses these lighter notes and develops a richer, warmer, more balsamic character dominated by norpatchoulenol, patchouli alcohol, and various oxidation products. The color deepens from amber to dark brown.
Some producers accelerate this aging through heat treatment, iron-catalyzed oxidation, or blending with fractionated patchouli components. 'Dark patchouli' as a perfumery ingredient typically refers to these processed variants.
In formulation, dark patchouli provides a deep, chocolatey, earthy base note with notable tenacity — the foundation of many amber, chypre, and modern woody compositions.
Patchouli oil actually improves with age — unlike most essential oils, which degrade. Vintage patchouli oils from the 1970s-80s can sell for $500-1,000 per kilogram, known for deep, chocolatey character that decades of oxidation have developed.
Extraction & Chemistry
Extraction method: Steam distillation of Pogostemon cablin leaves followed by aging (natural oxidation over years) or accelerated processing (heat treatment, iron catalysis). Some 'dark patchouli' is produced by molecular distillation to remove lighter fractions. Aged vintage patchouli oils (10-30+ years) command premium prices. Production: Indonesia (primary), India, Philippines.
Molecular Formula
N/A — complex accord built on patchoulol (C₁₅H₂₆O) and related sesquiterpenes
CAS Number
N/A — olfactory accord based on Pogostemon cablin variants
Botanical Name
Pogostemon cablin (base plant, heavily processed or fractionated)
IFRA Status
No known restrictions
Synonyms
patchouli, Pogostemon cablin
Physical Properties
Odor Strength
Medium
Appearance
Pale yellow to amber viscous liquid
In Perfumery
Dark patchouli (aged/processed Pogostemon cablin) provides a deep, chocolatey-earthy base note. Aging removes camphoraceous top notes and develops norpatchoulenol and oxidation products. Functions as a foundational base in amber, chypre, and dark woody compositions. More balsamic and less green than fresh patchouli. Excellent fixative — extends composition longevity. Pairs with vanilla, vetiver, and amber in rich base structures.
