What is ambergris, and how is it used in perfume?
By Omer Siton, founder of PerfuMate · Updated
Ambergris is a waxy mass that forms in the intestine of the sperm whale and is found floating at sea or washed up on beaches, where long exposure to sea and air oxidizes it, lightening it from black through grey and brown towards white and turning its faecal smell musky. Perfumers use it as a tincture: a fixative that, in the catalog's words, exalts everything in a formula. Synthetic materials, ambroxide (sold as Ambroxan and under other names) among them, largely replaced it in the twentieth century; ambergris is rare, costly and, in some countries, illegal to trade.
What is ambergris, and what does it smell like?
Ambergris is a solid, waxy material that builds up in the sperm whale's intestine around the indigestible remains of its prey, mostly squid beaks (pygmy and dwarf sperm whales are thought to make it in smaller amounts); fresh it smells faecal, and aged at sea it turns musky, salty and skin-like. How it leaves the whale is still debated: the principal curator of mammals at London's Natural History Museum leans towards the view that it passes out with faecal matter.
The change comes from oxidation: exposed to the sea and air for a long time, ambergris changes color, from black through grey and brown towards white, and its smell grows more pleasant as it dries. The catalog describes a tincture of aged ambergris as "a subtle, complex halo of salty skin, seawater, tobacco, old paper and radiant musky warmth". Its main constituent is not what you smell: the catalog estimates about 30% ambrein, which the Natural History Museum describes as odorless, 25% epicoprostanol and only about 0.5% ambroxide, the molecule chemists treat as the prototype of all ambergris odorants.
Why is ambergris so expensive?
Because it is rare, found by chance, and valued by color and time at sea. Only a small share of sperm whales produce it: the Natural History Museum gives less than 5% of whale carcasses. It cannot be produced on demand; it turns up floating or washed ashore. Quality is thought to rise with time at sea, and perfumers have long graded it by color, with the finest perfumes made from pure white pieces. In some large markets, the United States among them, it cannot be sold legally at all, which narrows the supply further. Prices vary by grade and are not given here.
Is ambergris legal to buy, sell or use?
It depends on the country, and in some large markets the answer is no. This is orientation, not legal advice:
- United States. NOAA Fisheries states that you may not collect, keep or sell ambergris, because it is a part from an endangered marine mammal, the sperm whale; NOAA's guidance on protected species parts covers both the Marine Mammal Protection Act and the Endangered Species Act.
- India. The sperm whale is among the animals protected by the Wild Life (Protection) Act, 1972, and India's export policy prohibits the export of wild animals, including their parts and products.
- International trade. The sperm whale is listed in CITES Appendix I. London's Natural History Museum writes that CITES considers naturally occurring ambergris a waste product of sperm whales, so the convention does not stop it being collected from the beach or the sea; national laws, like those above, can still forbid collecting, keeping or selling it.
- Elsewhere. Other countries, Australia and the Philippines among them, have rules of their own that this page does not cover; ask the national environment or wildlife authority.
Check the rules where you live, where the seller is and for any shipment across a border before you buy.
Where can you buy ambergris?
Where it is legal, from specialist dealers in raw pieces and from some natural-perfumery suppliers as a ready-made tincture; this page names no shops. Before buying, ask where and when the piece was found, for documents covering any cross-border shipment, and whether it is natural at all: several perfumery bases sold under ambergris names are reconstructions, and in PerfuMate's catalog every ambergris-family material but the tincture is synthetic. The South Australian Museum describes two simple checks: real ambergris floats, even on fresh water, and a red-hot needle pushed into it melts the area around it into a dark liquid and comes out with a tacky residue.
Is ambergris the same as amber?
No: ambergris is a whale product, amber in perfumery is a resinous accord, and amber the gemstone is fossil resin, three different things that share a word. Ambergris's old names, ambra grisea and grey amber, are where the confusion starts. The perfumery amber is a warm, resinous, sweet blend built on labdanum, benzoin and vanilla, like PerfuMate's Classic Amber Accord. An ambergris accord smells salty, mineral and skin-like; an amber accord smells of warm resin and vanilla. The catalog keeps them in separate families, ambergris and amber.
Ambroxan vs ambergris: what is the difference?
Ambroxan is one molecule, ambroxide, that occurs in ambergris; ambergris is a natural mixture in which that molecule is a small part. Kao makes Ambroxan from sclareol obtained from clary sage, and Givaudan makes its grade of the same molecule, Ambrofix, by fermenting sugarcane. So ambergris itself cannot be synthesized, but its key odorant can, and chemists regard (-)-ambrox as the prototype of all ambergris odorants.
On a strip the difference is plain. Ambroxan is louder, 7 out of 10 on the catalog's strength scale against 4 for the tincture, drier and simpler; the tincture is quieter and adds salty, animalic, old-paper facets that no single molecule carries. The tincture's computed substitutes are all blends, not any single molecule. How much Ambroxan in a perfume covers the molecule.
How is ambergris used in perfume, and how is a tincture made and dosed?
As a tincture: pieces of ambergris are steeped in perfumer's alcohol, and the tincture is weighed into a formula like any other material. Tinctures are made at a few percent ambergris; the catalog describes use at 1 to 5% tincture strength and prefills 3%, and the catalog's notes on two reconstructions describe one as standing in for a 3% tincture and the other as roughly equal to a 5 to 10% tincture. Label the bottle with its strength, as for any dilution.
How much tincture goes into a perfume is decided by trial. It is quiet, 4 out of 10 on the catalog's scale, and valued for what it does to the whole formula rather than as a note of its own: the catalog calls it a natural fixative that exalts everything around it. Add it in steps and judge each version on a strip the next morning. None of the three constituents the catalog estimates for it has an IFRA Category 4 limit; the law on buying it, above, is the real constraint.
What is an ambergris accord, and what can replace ambergris?
An ambergris accord is a blend that rebuilds the smell of ambergris tincture from other, mostly synthetic, materials, so it can be used where the real thing is unavailable, illegal or too costly. PerfuMate's published Ambergris Accord layers two ambroxide-type materials, Ambroxan 31.5% and Cetalox 18.9%, over musks (Habanolide 14.7%, Ambrettolide 6.3%), woods (Iso E Super 12.6%, Timberol 5.25%) and labdanum 10.5%, with traces of seaweed absolute and Ambrinol, the trace its note credits with the "dirty sea" facet. The note says to use it at 5 to 20% of a concentrate; treat it as an untested starting point and adjust it by smell. How much Ambroxan works through it gram by gram.
Ready-made bases do the same job. The catalog lists reconstructions such as Absolute Ambergris, Ambergris T Oliffac and Ambergris Synth. Asked to replace the tincture itself, the substitutes engine ranks Absolute Ambergris with Grisalva, 71 to 29, at 61%, and notes that a molecule standing in for a natural does not bring the rest of the natural with it.
The catalog figures on this page, strength, blotter life, estimated constituents and substitutes, are on each material's page, free to read. To make the accord from what you already own, open the Ambergris Accord and rebuild it from your shelf.
Sources: Natural History Museum, What is ambergris?; NOAA Fisheries, What to do with body parts of endangered species (updated 5 March 2026) and Sperm whale (CITES Appendix I); Directorate General of Foreign Trade, India, ITC (HS) 2018, Schedule 2, Appendix 1: Wild Life (Protection) Act entries; South Australian Museum, Identification FAQs (ambergris); Kao Chemicals, AMBROXAN; Givaudan, Ambrofix; Yang et al., One-pot synthesis of (-)-Ambrox, Scientific Reports 6 (2016).