Definition
Gaiac wood should not be confused with gaiacol (a synthetic molecule with a smoky-phenolic character) or with bois de Gaïac accord (a proprietary accord blend used by Givaudan and other flavor houses). The natural oil remains the preferred material for premium natural formulas, while the synthetic substitute serves cost-sensitive applications.
The Osmetheca Encyclopedia entry on gaiac wood covers sourcing, extraction, and CITES compliance in detail.
Use in perfumery
Gaiac wood oil is steam-distilled from wood chips of Bulnesia sarmientoi, a native tree of the Gran Chaco region (Argentina, Paraguay, Bolivia). The oil contains guaiol, bulnesol, and related sesquiterpene alcohols that give it its characteristic dry, warm, woody-rosy-smoky profile with a faintly phenolic edge. It is a valuable natural fixative: its low volatility anchors more volatile materials (Fragrantica encyclopedia, accessed 2026-05-27).
In niche perfumery, gaiac wood is used in woody bases, woody-oriental compositions, and as a supporting material in chypre and leather structures. Its sustainability status is increasingly monitored: Bulnesia sarmientoi was listed on CITES Appendix II in 2010 due to overharvesting, requiring trade permits and sustainable sourcing documentation. This has made traceable gaiac wood more expensive and driven interest in synthetic alternatives such as Guaiacol (Wikipedia EN, CITES, accessed 2026-05-27).