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

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

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