Short answer
Sandalwood gives perfume a soft, creamy, milky-woody base that lasts for many hours. The oil is distilled from the heartwood of Santalum trees: East Indian sandalwood (Santalum album), now largely from plantations in India and Australia; Western Australian sandalwood (S. spicatum), drier and sharper; and Pacific species such as S. austrocaledonicum. Its character comes mainly from the santalols. Because the oil is expensive and its supply has a long history of overharvesting, most perfumes rely partly or wholly on sandalwood-type aroma chemicals, several of them extremely powerful. Record the species and source of any oil you use; they are different materials.
The oils
| Species | Common name | Character |
|---|---|---|
| Santalum album | East Indian sandalwood | Rich, creamy, sweet; the classic reference |
| Santalum spicatum | Western Australian sandalwood | Drier, lighter, slightly sharp |
| Santalum austrocaledonicum | New Caledonian / Pacific sandalwood | Close to album, often a little greener |
Constituent profiles — especially the santalol content — vary by species, tree age and source, and suppliers' certificates usually report them. A product called "sandalwood oil" that does not name its species is not fully identified; see fragrance material names and CAS numbers. Other woods are compared in woody notes in perfumery.
Supply and sustainability
Wild Indian sandalwood was heavily overexploited, and its supply has long been controlled by Indian authorities; plantations now provide much of the S. album on the market. Because sourcing practices vary, ask suppliers about the origin of the wood and whether it is plantation-grown, and keep that information with the material record. Expensive naturals are also targets for adulteration; a constituent profile on the certificate of analysis is the best evidence a small buyer can get. See how to source perfume raw materials.
Sandalwood aroma chemicals
A family of synthetic materials with sandalwood character is widely used, sold under trade names such as Sandalore, Javanol, Ebanol, Polysantol and Bacdanol. They differ in strength and facet — some creamy and rich, some radiant and diffusive — and some are powerful enough to be used at a fraction of a percent. They give consistency and lower cost, and they make "sandalwood" possible at scale. Combined with a little natural oil, they can approach the natural's richness.
- Weigh the powerful ones as dilutions; see how to dilute aroma chemicals.
- Check each against the current IFRA Standards and its supplier's documents.
- Smell them over several hours; their differences show in the drydown.
Using sandalwood
- As a base: creamy woods under florals, ambers and gourmands.
- As a fixative-like anchor: its long life holds the drydown together; see perfume fixatives explained.
- With rose: a classic pairing, and in South Asian tradition the base of attars; see what attar is.
- With oud: common in Middle Eastern styles; see oud in perfumery.
Cost
Natural sandalwood oil is often one of the most expensive rows in a formula. Replacing part of it with sandalwood-type aroma chemicals is a common cost lever, tested blind against the original; see reducing a fragrance formula's cost.
Records
- Species, origin, plantation or wild, supplier and lot for every oil.
- Santalol content from the certificate, if given.
- For synthetics: the exact material and maker, and the dilution used.
Sandalwood belongs to the woody family in perfume materials by odor family.
Testing a sandalwood substitution
When replacing some natural sandalwood with aroma chemicals, change one variable at a time. Keep the total "sandalwood effect" constant by dosing the synthetics for effect rather than weight, compare old and new versions blind at several time points, and pay most attention to the drydown, where the natural's richness is easiest to miss. A triangle test tells you whether anyone can tell them apart.
Frequently asked questions
Why does Australian sandalwood smell different from Indian?
They are different species with different constituent profiles. S. spicatum is typically drier and lower in the santalols that give S. album its creamy richness.
Does sandalwood oil improve with age?
Many perfumers find it rounds out over time if stored well. Keep it closed, cool and dark.
Written and reviewed by the RUŌOD Lab team. This article is general education about perfume formulation and record-keeping; it is not legal, regulatory or safety advice, and the examples are illustrations, not validated commercial formulas. How we write and check these guides.