Castoroleum. An Oil extract of Beaver Castors


Castoroleum-An oil extract of cured beaver Castors for oil-based/solid perfumes, beard oils and Moustache waxes. Like the alcohol tincture of Castor, the oil extract helps fix a fragrance and adds deep soft and enduring leather notes.



Castoroleum-An oil extract of cured beaver Castors, for oil-based/solid perfumes, beard oils, balms and Moustache waxes. Like the alcohol tincture of Castor, the oil extract helps fix a fragrance and adds deep soft and enduring leather notes. Can be added in small quantities to alcohol-based perfumes.

No essential oils of animalics

The animal essences and aromatic materials do not lend themselves to distillation so we will find no essential oils of Castor, Civet, Hyraceum or Muskrat. This is one of the factors that limit their use in oil-based perfumes, solid perfumes, beard balms and moustache waxes. Tinctures and absolutes of the animalics often do not dissolve readily in alcohol or oil, dropping substantial residue in the solution and not delivering the full potency or spectrum of their aromas.

After a few years of experimenting and exploring various processes, I have finally found a method that yields consistently high-quality perfume oil from Beaver Castor. I call it Castoroleum.

Castoroleum is made at a concentration of 1:3, (25%) using 1-2 year cured, Canadian Beaver Castors with a hot oil infusion and extended maceration of 1 year in Fractionated Coconut oil. When full Castor sacs are properly cured, one finds within them a solid, brittle, aromatic resin which will mostly dissolve in alcohol and warm oils.  This is another unique artisan-crafted aromatic material produced in-house by Dan Riegler. A product you will find nowhere but at Apothecary’s Garden.


I used a small amount of Benzyl Benzoate to first loosen up the material and draw out some of the compounds that were reluctant to dissolve in Fractionated Coconut oil. Benzyl Benzoate is an aromatic compound and solvent that is found in abundance in Benzoin resin, Ylang Ylang flowers, Beaver Castors and other aromatic materials. It has become my go-to solvent for resins and compounds that need a little help dissolving in alcohol or oils. Benzyl benzoate has a slight vanilla-ish odour and acts as a fixative in perfumery. It dissolves in both alcohol and oils.

Oil-based and alcohol-based perfumes

Once upon a time, most, if not all our perfumes were oil-based. We developed sophisticated methods and techniques for producing high-quality and enduring perfumes from the natural materials around us. Unfortunately, we have lost much of this knowledge. Oil extracts such as Castoroleum can be added to alcohol-based perfumes at a ratio of 10% to 30% depending on the water content of the perfume. Pure alcohol will absorb more oil without clouding.

Beard Balms and solid perfumes

A small amount of Castoroleum adds a sensuous extra dimension to solid perfumes, beard oils and balms. It acts as a fixative and helps anchor and extend the life of more delicate and volatile notes in an aromatic composition.

The Castor glands used to prepare Castoroleum are purchased from Canadian trappers who are licensed by the Provincial government to cull a specific number of Beavers each year. The culling is part of a program to maintain an optimum number of beaver colonies, a healthy Beaver population and avoid conflict between animals and man. Beavers cannot be transported to new areas since they are HIGHLY territorial and do not take well to the proximity of other beaver clans. The use of illegal leg traps is banned by Canadian provincial governments.


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