Direct answer: Castoreum (海狸香, hǎilíxiāng) is the historical scent secretion of beavers (Castor fiber and Castor canadensis), drawn from the castor sacs near the base of the tail. It is a Western classical perfumery fixative, not a Chinese incense material, and modern “castoreum” is almost entirely synthetic — the beaver being protected in much of its range. This page treats it strictly as historical context.
Key facts
| Chinese | 海狸香 (hǎilíxiāng) — “beaver scent” |
| Source | Castor fiber (Eurasian beaver); C. canadensis (N. American) — animal secretion |
| What it is | A historical animal fixative, mostly synthetic today |
| Aroma | Animalic, leathery, smoky, sweet |
| Traditional role | Western perfumery fixative (historical); no Chinese incense role |
Aroma profile
Castoreum is animalic and leathery, smoky and sweet, with a rich, musky-tobacco character — a deep, warm, “animal” note used in Western perfumery to add warmth and a leather-like tenacity to a fragrance. It is a fixative, not a lead scent: it anchors and deepens other notes rather than standing on its own. Its historical value was that warm, leathery base, now reproduced synthetically.
Historical context only, and a protection caveat (read this)
海狸香 must be framed precisely:
- Western classical, not Chinese: castoreum is a European perfumery material, absent from the Ming-dynasty Xiangcheng (香乘) and the Chinese incense tradition. Its Chinese name 海狸香 is a modern descriptive term, not a classical ingredient.
- Historical use only: castoreum was used in classical and 19th–20th-century Western perfumery as a fixative. It is not a contemporary or recommended material.
- Protection: the Eurasian beaver Castor fiber is a legally protected species across much of Europe and Asia, and its conservation status ranges from Near Threatened to Critically Endangered in some subspecies. Harvesting castoreum from protected beavers is not a legitimate modern practice.
- Synthetic today: virtually all “castoreum” used in modern fragrance and flavor is a synthetic reconstruction of the scent, not the animal secretion.
This page describes 海狸香 = castoreum as historical context only. It is documented for what it was, not recommended as a material, and we state the protection and synthetic-replacement facts plainly.
Source and origin
Castoreum is a secretion from the castor sacs of beavers — the Eurasian beaver Castor fiber and the North American beaver Castor canadensis — used by the animals for scent-marking. In Western perfumery it was historically obtained by harvesting the sacs, a practice now largely obsolete given the beaver’s protected status and the availability of synthetic substitutes. Its aromatic character — animalic, leathery, smoky, sweet — is what modern perfumers reproduce synthetically.
In Western tradition (historical)
- Perfumery fixative: castoreum was a classical Western perfumery fixative, prized for its warm, leathery, animalic depth.
- Not Chinese incense: castoreum has no role in the Chinese incense tradition or the 香乘; its Chinese name is a modern descriptive term.
- Synthetic reconstruction: modern “castoreum” is a synthetic accord, not the animal material.
Traditional use vs modern evidence
The historical Western perfumery use is documented. We make no medical claims, and we explicitly note that castoreum is historical context only, not a recommended material, given the beaver’s protected status.
Quality and sourcing notes
Practical points for buyers:
- 海狸香 is castoreum, a historical Western perfumery fixative — not a Chinese incense material, and not recommended today.
- Modern “castoreum” is almost entirely a synthetic reconstruction of the animalic-leathery scent, not the animal secretion.
- The Eurasian beaver Castor fiber is a protected species in much of its range; legitimate modern fragrance uses the synthetic, not the animal material.
Safety
Incense combustion produces smoke and particulate matter. Burn in a well-ventilated space, avoid inhaling concentrated smoke, and keep away from children and pets. This is editorial knowledge content, not medical advice.
FAQ
What is 海狸香 (castoreum)? The historical scent secretion of beavers — the Eurasian beaver Castor fiber and the North American beaver Castor canadensis — drawn from the castor sacs near the base of the tail. It was used in Western perfumery as a fixative, and its Chinese name is a modern descriptive term.
Is castoreum a Chinese incense material? No. Castoreum is a Western classical perfumery material, absent from the Ming-dynasty Xiangcheng (香乘) and the Chinese incense tradition. Its Chinese name 海狸香 (“beaver scent”) is modern and descriptive, not a classical ingredient.
What does castoreum smell like? Animalic and leathery, smoky and sweet, with a rich, musky-tobacco character. It is a fixative rather than a lead scent — it anchors and deepens other notes with a warm, leathery base.
Is castoreum still used today? Only as a synthetic reconstruction. Virtually all modern “castoreum” in fragrance and flavor is a synthetic accord reproducing the animalic-leathery scent. The animal material is essentially obsolete, and the Eurasian beaver is a protected species in much of its range.
Is the beaver protected? Yes. The Eurasian beaver Castor fiber is legally protected across much of Europe and Asia, with a conservation status ranging from Near Threatened to Critically Endangered in some subspecies. This is why legitimate modern fragrance uses the synthetic, not the animal secretion.
Is castoreum the same as musk or civet? No, though all three are historical animal fixatives with warm, animalic depth. Castoreum comes from beavers, musk from the musk deer (Moschus), and civet from civets. Each has its own entry, and all three are now largely replaced by synthetic substitutes.
See also: civet, musk, and the full scent guide.
Evidence & Sources
Identity
Source: castoreum as the secretion of beavers — Castor fiber (Eurasian beaver) and Castor canadensis (North American beaver) — an animal-derived material. Castor fiber on GBIF. Evidence type: Established — animal-derived.
Traditional use
Source: castoreum as a Western classical perfumery fixative, historically used and now replaced by synthetic reconstruction; absent from the Chinese incense tradition. Evidence type: Historically documented — Western perfumery (historical only).
Conservation
Source: the Eurasian beaver Castor fiber is legally protected across much of Europe and Asia, with conservation status ranging from Near Threatened to Critically Endangered in some subspecies (GBIF/IUCN). Evidence type: Established — protection status.
Safety
Source: incense combustion produces smoke and particulate matter; burn in a well-ventilated space. Evidence type: Established.
Evidence status
| Layer | Status |
|---|---|
| Identity | Established (animal-derived) |
| Traditional use | Historically documented (Western, historical only) |
| Conservation | Established (protected species) |
| Health claims | Not established |
Sources
Sources: the Eurasian beaver Castor fiber as the source of castoreum, and its conservation status. Castoreum is historical Western perfumery context only, absent from the Chinese incense tradition, and now replaced by synthetic reconstruction; no medical claims are made. This is editorial knowledge content, not medical advice.