Description and usage notes:
The oil from the roots of the costus plant, native to the Indian sub-continent, was once widely used in perfumery but is now prohibited from use by IFRA. Instead we’re offering this replacer from IFF which is a about the best facsimile around, albeit not quite a match for the prohibited oil.
Mainly used in leather compositions but also useful in fougere, with patchouli, for woody / woodland floor accords and in other fragrance types to add depth and realism.
I found this rather nice description of the scent the Pifreries blog: “The smell of costus oliffac is woody, animalic but not fecal. It evokes for some clean sweat, wet dog, for others sebum or greasy hair. There is in my opinion something almost floral orris and waxy that could recall allyl ionone, without its tropical fruit aspect. And also something muddy and grassy that makes me think of calamus.“, which I’m quoting here because it includes some impressions quite different from my own.
Safety Data Sheet