The evidence register · The Great Paradox

The Great Paradox: the evidence

The claims The Great Paradox makes, as it makes them today: 42 sourced, 21 labeled for what they are, 23 unsourced.

About 7 minutes of reading

The whole register · the page itself

The molecules that changed everything

The Great Paradox

  • sourced C₁₀H₁₈O arranged in exactly the same way. · PubChem Compound Summary for CID 6549, Linalool
  • sourced C₈H₈O₃ as the section states it · PubChem Compound Summary for CID 1183, Vanillin
  • sourced Dior’s Eau Sauvage (1966, Edmond Roudnitska) is often cited for its use. · Osmothèque, Conservatoire international des parfums
  • unsourced You’re smelling hundreds of individual molecules hitting your olfactory receptors simultaneously.
  • unsourced Rosa damascena oil contains hundreds of identified compounds, among them:
  • house interpretation It means we know exactly what we’re making — and we can make it the same way every time.
  • house interpretation Synthetics expanded the perfumer’s palette far beyond what nature could supply.
  • perfumery convention Aldehydes often smell fatty or citrusy, esters fruity, alcohols fresh, ketones sweet or powdery. A small change in structure can change the whole scent.
  • perfumery convention The pyramid follows volatility more than any rule.
  • sourced The two mirror forms of some molecules smell different. Same atoms, different arrangement, different smell. · Genva et al. (2019). Is It Possible to Predict the Odor of a Molecule on the Basis of its Structure?
  • unsourced Your nose has several hundred types of olfactory receptors. Each molecule activates a combination of them.
  • unsourced At high concentrations, indole smells fecal — it is one of the molecules in that smell. But at the trace levels found in jasmine, it creates that heady, narcotic, almost scandalous quality that makes jasmine so intoxicating.
  • house interpretation Your nose is a remarkably fine chemical detector.
  • unsourced You have several hundred types of olfactory receptors. Each odor activates its own combination — like a barcode.
  • unsourced Smell adapts quickly. After a while you stop consciously perceiving a constant odor.
  • unsourced Much of what you call “taste” is actually retronasal smell. Block your nose, and coffee tastes like bitter water.
  • unsourced A rose absolute can yield hundreds of peaks on a chromatogram — each peak a distinct molecule.
  • unsourced The “Flavor Dilution Factor” (FD) reveals true impact — a trace compound can outrank one present in far greater amounts.
  • unsourced Hundreds of volatiles have been identified in wine.
  • house interpretation An effect no single natural material gives.
  • house interpretation It is widely linked to the marine fragrances of the late 1980s and 1990s, Issey Miyake’s L’Eau d’Issey among them.
  • house interpretation A synthetic facet of ambergris, central to many recent masculine fragrances.
  • unsourced Its persistence in the environment is monitored and debated. Still used because little else smells quite like “clean.”
  • house interpretation Its generous use in Mugler’s Angel is widely credited with opening the gourmand category.
  • unsourced The bacteria living on your skin can transform some fragrance molecules into different compounds, which is one proposed reason a perfume can smell different from one person to the next. Your skin is a living surface, not a blotter.
  • house interpretation Much of a bottle’s price is marketing and packaging rather than the liquid.
  • unsourced It can float in the ocean for years, oxidizing into a complex, animalic-sweet material. Its legal status differs from country to country.
  • unsourced Androstenone, Iso E Super and some musks are well-known cases. For β-ionone, genetic variation changes how people perceive it.
  • house interpretation A fine fragrance can contain dozens of ingredients, a masterwork many more. But the palette available to perfumers is finite.
  • house interpretation A safer return for the brand.
  • unsourced Now largely replaced with synthetic civetone for ethical reasons.
  • unsourced From the musk pod of the male musk deer, a protected species whose trade is controlled. The “holy grail” of animalic notes, and the reason perfumery turned to synthetic musks.
  • house interpretation A complex natural with a very low yield.
  • sourced Studies have found scent-triggered memories often more emotional and older than memories cued by words or pictures; the olfactory system’s close links to the amygdala and hippocampus are the usual explanation. · Herz (2016). The Role of Odor-Evoked Memory in Psychological and Physiological Health
  • house interpretation Skanky ouds, smoky leathers, medicinal notes can become beautiful with repetition. What you dislike today may become your signature.
  • sourced Paul Parquet used it in Fougère Royale for Houbigant, which gave its name to the fougère family. · Kleoff et al. (2022). Synthesis of odorants in flow and their applications in perfumery
  • unsourced In commercial perfumery, the fragrance concentrate is a small share of the retail price.
  • sourced Iris rhizomes dried and aged for years, then steam-distilled. · Crișan (2025). The Genus Iris Tourn. ex L.: Updates on Botany, Cultivation, Novel Niches and Impactful Applications
  • sourced Some naturals are restricted by the IFRA Standards (the industry’s own rules, which are not law in the US) and, for a few of their components, by EU law, because they can sensitize skin or react with sunlight; natural musk came from an animal now protected… · International Fragrance Association (IFRA)
  • sourced Culture shapes much of that learning: responses to everyday smells differ widely from one culture to another. · Herz (2016). The Role of Odor-Evoked Memory in Psychological and Physiological Health

The Ghost Molecule

Natural vs Synthetic — The Truth

The Captive Molecule Catalog

Aroma Chemicals Reference

The trace-compound problem

  • house interpretation It is one reason a “synthetic rose” rarely matches a natural rose absolute, and why older naturals can smell different from modern ones even when their main compounds agree.

from the house’s claims register and the records, checked against the pages’ own words when the site was built

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