Australian Sandalwood oil from Santalum spicatum is chemically drier and woodier than its Indian counterpart, owing to a lower combined a- and β-santalol content (typically around 20-22%) and characteristically high levels of E,E-farnesol — a sesquiterpene alcohol that gives the oil a more diffuse, green-woody facet absent in S. album.^[1] Geographic variation within Western Australian populations is substantial: northern and southwestern trees yield the highest santalol concentrations, a finding with direct relevance to sustainable plantation breeding.^[2] In a controlled human psychophysiology study, inhalation of Western Australian sandalwood oil produced a statistically distinct reduction in salivary cortisol levels during a recovery phase, suggesting a measurable stress-modulating effect.^[3]