Educational information, not medical advice — ask your doctor or midwife.
Santalum spicatum is Australian sandalwood, a small tree from the dry inland of Western Australia. Its heartwood and roots yield a thick oil with a soft, woody smell. Most of that oil goes into perfume, incense, soap and skin-care.
You will also see it sold on its own as an aromatherapy oil. Some people blend it into carrier oil for massage, or burn the wood chips as incense. The seeds press out a separate, lighter oil used in creams.
Here is the honest verdict. There are almost no human trials on Australian sandalwood for any health claim. Long use in tradition is not proof that a thing works, and it is not proof that it is safe.
No one has shown what this oil does in the human body. What follows comes from the laboratory, not from patients.
In test-tube work, sandalwood oils slow the growth of some bacteria and fungi. In cell studies, santalol compounds appear to damp down signals linked to swelling and redness. Whether any of that happens on your skin at normal cosmetic strength is not established.
The calming effect people report is mostly about smell. Scent can shift mood and alertness, and that is real enough. But it is hard to separate from liking the smell, and it has not been tested properly for this species.
Claims that it treats infection, cancer or skin disease are not supported by human evidence.
You will meet it in a few forms:
- Steam-distilled essential oil, sold in small dark bottles for scent use. - Pre-diluted roll-ons and massage blends, already mixed into a carrier oil.
- Wood chips, powder and incense sticks for burning. - Seed (nut) oil, used in creams and balms for dry skin. - An ingredient in soap, lotion, aftershave and perfume.
The pure oil is for use on skin, in a diffuser or in a blend. It is not a drink and not a food. Capsules of sandalwood oil exist in some markets, but there is no good human evidence behind them.
Quality varies a lot. Cheap "sandalwood" oils are often blends, or a different plant altogether, such as West Indian sandalwood (amyris). Look for the full botanical name on the label.
Australian sandalwood has long standing in two separate stories. Aboriginal peoples of Western Australia used parts of the tree, including the nuts as food and the wood and smoke in daily life. Records of exact medicinal use are patchy and vary between groups.
From the 1840s the wood became a major export from Western Australia. Ships carried it to China and India, where it was burned as incense in temples. That trade shaped the state's early economy and stripped many wild stands.
In the twentieth century the oil found a second life in perfume. Some old pharmacy texts listed sandalwood oil for urinary complaints, taken by mouth. That practice has been dropped, and this page does not suggest it.
Stop using it and see a doctor if:
- A rash spreads, blisters or weeps. - Itching or burning lasts more than a day or two after you stop. - Skin you treated looks infected, with heat, pus or spreading redness. - The oil gets in an eye and stinging or blurred sight lasts after rinsing.
Get emergency help at once if:
- Anyone swallows the essential oil. Ring your poison centre or emergency number straight away, even if they seem fine. Do not make them vomit. - You get swelling of the lips, tongue or face, a tight throat, or trouble breathing.
In the United States, the European Union, the UK and Australia it is sold as a cosmetic and fragrance ingredient, not as a licensed medicine. In Western Australia, harvest of wild sandalwood is controlled by licence. Fragrance allergen labelling rules apply in the EU and UK.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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