The evidence register · The Reference Shelf
The Reference Shelf: the evidence
The claims The Reference Shelf makes, as it makes them today: 6 sourced, 18 labeled for what they are, 15 unsourced.
About 3 minutes of reading
The whole register · the page itself
The 14 Fragrance Families
- sourced It’s a fantasy accord invented by Houbigant in 1882 that became a foundation of modern men’s perfumery. · Stepanyuk and Kirschning (2019). Synthetic terpenoids in the world of fragrances: Iso E Super® is the showcase
- sourced Angel (1992) is widely credited with founding the genre by combining patchouli with ethyl maltol (cotton candy). · Osmothèque, Conservatoire international des parfums
- unsourced A widely used modern classification was developed by Michael Edwards in 1983.
- perfumery convention Most fragrances can be placed in a family — a classification based on dominant olfactory characteristics.
- perfumery convention Understanding families is a good first step to developing a trained nose and coherent collection.
- perfumery convention Bright, fresh, widely liked — but fleeting. Citrus top notes tend to fade quickly.
- house interpretation IFRA restrictions on oakmoss have changed the classic chypre; modern versions reconstruct the effect with synthetics.
- perfumery convention Largely a creation of synthetic chemistry — there is no natural “ocean” extract.
- house interpretation Black pepper adds a dry, prickly sparkle; cardamom adds camphorous freshness.
- sourced Wild oud is among the costliest materials in perfumery. · Baig et al. (2025). Agarwood in the Modern Era: Integrating Biotechnology and Pharmacology for Sustainable Use
- perfumery convention Much of the “oud” in Western perfumery is synthetic (Oud Synth, Cashmeran blends) or reconstructions.
- unsourced Galaxolide is common in laundry detergents.
- unsourced Some people are anosmic to certain musks.
- sourced Orris root is aged for years, and orris butter is famously costly. · Crișan (2025). The Genus Iris Tourn. ex L.: Updates on Botany, Cultivation, Novel Niches and Impactful Applications
- unsourced Natural deer musk is now tightly restricted in international trade (the musk deer is listed under CITES).
The Big Four
- unsourced Four corporations dominate the global fragrance supply industry.
- unsourced Many of the designer fragrances you’ve worn were likely created by a perfumer employed by one of these houses.
- unsourced Givaudan maintains a large captive library — proprietary molecules competitors cannot use.
- unsourced Acquisitions such as Ungerer & Company expanded their naturals portfolio.
- unsourced Firmenich (now DSM-Firmenich) was long privately held by the founding family, until its merger with DSM.
- unsourced IFF is among the houses working on biotechnology in fragrance.
- unsourced Amber Xtreme · plus IFF-born classics now widely made: Iso E Super · Galaxolide · Cashmeran
- house interpretation Symrise has grown through acquisitions and sustainability positioning.
- unsourced Symrise runs a large vanilla sourcing program in Madagascar.
- house interpretation When you buy a fragrance from many designer brands, you’re often buying something created outside the brand.
- house interpretation Brands commonly issue “briefs” to several suppliers at once.
- house interpretation The winning house then supplies the concentrate, often on exclusive terms.
- house interpretation A handful of houses maintain genuine in-house creation, among them Chanel (Olivier Polge), Hermès, Guerlain (Thierry Wasser), and Jean Patou/Joy (historically).
- house interpretation Most others rely largely on outside suppliers, chiefly the Big Four.
- house interpretation Commercial terms vary and are rarely disclosed.
- unsourced In 2024, the companies asked a U.S. federal court to dismiss a parallel private lawsuit alleging they colluded to raise ingredient prices for cosmetics and household products.
- sourced What this means: The four companies that dominate global fragrance production have been investigated in several jurisdictions over alleged cartel conduct. Nothing here is a finding of liability; if upheld, penalties could be substantial. Critics have long… · UK Competition and Markets Authority, case 51257 "Suspected anti-competitive conduct in relation to fragrances and…
- sourced Separately, in January 2024 the UK Competition and Markets Authority extended its investigation to suspected reciprocal arrangements on hiring (“anti-poaching”) between Firmenich, Givaudan and IFF; it closed its investigation of Symrise in 2025. · UK Competition and Markets Authority, case 51257 "Suspected anti-competitive conduct in relation to fragrances and…
Olfactory Illusions
- house interpretation Perfumers may stack several versions of a key note — several musks, more than one sandalwood-like material — so that someone who misses one may still smell another.
- unsourced Some fragrances affect the trigeminal nerve — the nerve that carries temperature and pain sensation in the face.
- unsourced Pink juice tends to be perceived as “sweeter”; amber juice as “warmer”; blue juice as “fresher.”
- house interpretation Brands make careful use of this.
The Scent Wheel
- house interpretation The six below are a simplified reading of it, and the notes on each family are the house's own.
- artistic visualization Inner rings turn fast and sit high, outer rings settle low and slow: motion as volatility, an evocation, not a measurement.
from the house’s claims register and the records, checked against the pages’ own words when the site was built

