Rose Otto vs Rose Absolute: The Roses Behind a Rose Perfume

Le Journal d'Aimée•
Pink damask roses in a field at first light

'Rose' on a perfume bottle hides a real material decision. Damask versus centifolia. Otto versus absolute. What the labels mean and what they cost.

In fine perfumery, the word rose almost always points to one of two species: Rosa damascena, the damask rose, or Rosa centifolia, the cabbage rose of Grasse. They produce different molecules, smell different on skin, and carry different prices. The second decision — rose otto vs rose absolute — is the extraction question, and it changes the chemistry as much as the species does. Bulgarian rose otto, the steam-distilled essential oil of Rosa damascena, traded in late 2024 at roughly 33,000 USD per kilogram (Fragrantica, 2024). When a perfumer writes rose on a brief, the next decisions are which species, from where, and extracted how.

The two species that matter

Definition. In professional perfumery, rose is the aromatic material derived from the flowers of Rosa damascena Mill. (the damask rose) or Rosa centifolia L. (the cabbage rose, also known as Rose de Mai or Provence rose). All other rose species used in fragrance are minor or regional; everything else marketed as a rose note is built around or from these two.

The damask is the older industrial workhorse. It is the rose grown in Bulgaria's Rose Valley, in Turkish Isparta, in Iran's Kashan region, and in Morocco's Dades Valley around Kelaa M'Gouna. The centifolia is the Grasse rose: harvested in May, cultivated on a few dozen hectares in the south of France, and bound by long-term contracts to a small number of luxury houses. Each species expresses a slightly different molecular profile, and that profile is what a perfumer is actually buying.

Rosa damascena: wine, honey, and the molecule no one can copy

The damask rose contains, as its main aromatic constituents, citronellol (often 20 to 35 percent of the essential oil), geraniol (15 to 30 percent), nerol, and a hydrocarbon backbone of nonadecane and heneicosane that gives the oil its waxy weight (Antonelli et al., MDPI Plants, 2023). The international standard ISO 9842 fixes citronellol at 20 to 34 percent and geraniol at 15 to 22 percent for authentic rose oil — numbers that are used to detect adulteration.

Two trace compounds do most of the perfume work. The first is β-damascenone, present at well under one percent but with an odour threshold so low that perfumers describe it as the molecule responsible for the wine-like, fruity-rose halo of high-quality rose otto. The second is rose oxide, a green-metallic top note that gives damask rose its characteristic lift and, in synthetic form, electrifies fragrances such as Lancôme's La Nuit Trésor (Fragrenza, 2024). The damask reads, on the strip, as the rose of red wine and beeswax: structured, slightly oxidative, written in a deeper register. When a bottle is sold as a damask rose perfume, this is the chord it is built around — damascenone halo, rose-oxide lift, citronellol-geraniol spine.

Rosa centifolia: the honeyed, green rose of Grasse

The centifolia produces a different aromatic chord. Subcritical and solvent extracts of Rosa centifolia are dominated by 2-phenylethanol, the aromatic alcohol that smells of fresh rose petals and honeyed bread. In one comparative chemical profiling, 2-phenylethanol made up 57.7 percent of Rosa centifolia absolute, with citronellol at 21.6 percent and geraniol at 12.1 percent (Antonelli et al., PMC, 2021). A separate analysis put 2-phenylethanol at roughly 47 percent of Rosa damascena absolute — high — but only 0.66 percent of Rosa damascena rose otto, because phenylethanol is water-soluble and is largely lost down the drain during steam distillation.

That single number explains a great deal. Rose otto, the distilled essence, is the wine-and-honey rose of damascena chemistry. Rose absolute, the solvent-extracted material, is the dewy-petal, fresh-honeyed rose dominated by phenylethanol. A centifolia rose perfume almost always rests on this absolute — the Grasse-style, phenylethanol-forward extract — rather than on a distilled oil. They are not interchangeable, and a serious formulator chooses between them deliberately.

What does it mean when a perfume says “Bulgarian rose” versus “Grasse rose”?

Origin changes the chemistry, because climate, soil, altitude, and harvest practice all shift the secondary-metabolite profile. Bulgarian rose otto from the Kazanlak valley is the international reference: high citronellol, classic ISO 9842 profile, the rose against which other origins are measured. Turkish Isparta is the volume producer — Isparta alone is responsible for roughly 60 percent of world rose oil supply (Rosa damascena, Wikipedia, 2024). Iranian rose from Kashan, distilled in the village of Qamsar through a traditional double-fired process, is treated as more delicate and floral. Moroccan damascena from Kelaa M'Gouna, planted by French perfumers in 1938, is harvested mid-April through mid-May from roughly 4,200 kilometres of rose hedgerows (Morocco.com, 2024).

Grasse is a category of one. Rosa centifolia blooms once a year for about five weeks in May and early June, with prime picking between May 15 and 25 (Bois de Jasmin, 2014). The acreage is tiny: in 1939 the Grasse region processed 750,000 kilograms of roses on roughly 700 hectares; today the surface dedicated to centifolia has fallen to about 50 hectares, a great deal of which is contracted to a single luxury house.

Rose otto vs rose absolute: the extraction question

Rose otto is steam-distilled. Rose absolute is solvent-extracted. The difference is mechanical, but it is also chemical and economic. Steam distillation strips out water-soluble molecules — chiefly phenylethanol — and concentrates the oil-soluble fraction; solvent extraction keeps both, producing a richer, more facetted material at higher yield.

The yields explain the prices. Rose otto from Rosa damascena requires roughly 3,000 to 3,500 kilograms of fresh petals to produce a single kilogram of oil, a yield of 0.02 to 0.05 percent by weight (Rose oil, Wikipedia, 2024). For Rosa centifolia absolute, roughly 12 tonnes of petals yield one kilogram of absolute (Fragrantica, 2014) — but because solvent extraction is more efficient than steam distillation in capturing aromatic mass per petal, the cost per kilogram of absolute typically runs two to five times less than the cost per kilogram of comparable rose otto. A finished rose otto can sit above 30,000 USD per kilogram on the open market; absolutes commonly trade in the four to five-figure range.

For a clean-fragrance house, the trade-off is also one of solvent. Conventional absolute is extracted with hexane, and reputable producers wash the residue down to trace levels — but trace levels are not zero, and any house with a strict natural-only standard treats hexane-extracted material as a category to interrogate.

The CO₂ rose, and why it matters to natural formulators

Supercritical CO₂ extraction is the third option. The petals are exposed to carbon dioxide held above its critical point, where it behaves as a solvent without being one in the chemical sense; when pressure is released, the CO₂ evaporates as gas and leaves no residue (AromaWeb, 2024). For rose, the CO₂ method is interesting because it preserves phenylethanol — the dominant rose-petal molecule — that is largely lost in steam distillation, while avoiding the hexane question that hangs over absolutes.

The output is closer to the smell of a fresh rose held under the nose than either otto or absolute. The drawback is cost and availability: CO₂ rose is produced in small volumes, and the equipment is expensive enough that few producers run it.

How to read “rose” on a perfume's INCI list

The label gives you more than the marketing copy. Rosa damascena flower oil means steam-distilled rose otto. Rosa damascena flower extract or Rosa damascena flower absolute indicates a solvent-extracted absolute. Rosa centifolia flower extract is, almost without exception, the Grasse-style rose absolute. Rosa damascena flower water is the by-product of distillation — the floral water (hydrosol), not the oil itself.

If a fragrance lists only parfum or fragrance with no botanical INCI, the rose note is most likely a synthetic accord. That is not, by itself, a problem — some rose molecules (geraniol, citronellol, phenylethyl alcohol) are nature-identical and routinely reproduced in the lab. But it does mean the label is telling you very little about what you are wearing.

The synthetic rose, and the natural-formulator's job

Most mass-market rose perfumes are built largely on reconstituted molecules: a synthetic phenylethyl alcohol, a synthetic citronellol, a synthetic geraniol, often a synthetic rose oxide for lift. These are nature-identical compounds — the same molecule a flower makes — and on safety grounds the regulatory file on each is well-documented. What synthetic rose loses is the trace fraction: the β-damascenone halo, the dozens of minor terpenes and esters that vary by harvest, the phenylethyl acetate and farnesol that round the natural extract.

A naturally formulated rose has to do that work without leaning on isolated molecules. The brief is harder. The perfumer has to balance two or three rose materials — an otto for structure, an absolute or CO₂ for headspace, sometimes a hydrosol for lightness — against the rest of the composition, and pay for it.

The rose at Aimée de Mars

Aimée de Mars works with steam-distilled Rosa damascena from documented Mediterranean origins, blended where a composition calls for the dewy-petal facet with naturally extracted absolute material. The maison's Aromaparfumerie® method, developed by founder Valérie Demars, treats rose as the material on which everything else is calibrated — the same logic of slow extraction and altitude-grown plant material that governs the lavender from Mévouillon. Aimée de Mars formulates without phthalates, synthetic musks, or ethanol of undocumented origin.

If you want to start with a rose-led composition, the floral wing of the catalogue is at /collections/scent-floral. For the family rose most often appears in — the rose chypre — we have a companion piece on the anatomy of a chypre, where the rose sits on a base of oakmoss and labdanum and reads as something quite different from a soliflore. The choice of rose, and which one, is the first decision a perfumer makes. The rest of the bottle follows.

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