Essential Oils Club

The Journal 2 min read

Absolutes and CO2 Extracts: Why Jasmine, Vanilla and Rose Aren't 'Essential Oils'

Some of the most beloved aromatics, jasmine, vanilla, rose absolute, can't be steam-distilled. Here's how absolutes and CO2 extracts differ from essential oils, and what it means for you.

Walk into any oil shop and you’ll see “jasmine oil” and “vanilla oil” next to the lavenders and lemons. But strictly speaking, several of the most treasured aromatics aren’t essential oils at all, they’re absolutes or CO2 extracts, made a completely different way. Here’s what that means and why it matters.

Why some plants can’t be distilled

Steam distillation uses heat, and the most delicate flowers, and cured pods like vanilla, either don’t survive it or don’t give up their aroma that way. Instead, their scent is captured by solvent extraction (producing an “absolute”) or with pressurised carbon dioxide (a “CO2 extract”). The result is richer and truer to the living flower, but chemically distinct from a distilled oil.

The famous three

  • Jasmine, a solvent-extracted absolute; the blossoms are far too delicate to distil. It’s dominated by benzyl acetate, with a trace of heady indole (review).
  • Vanilla, an oleoresin/absolute/CO2 extract of cured pods, dominated by vanillin (composition). There’s no such thing as steam-distilled vanilla.
  • Rose, uniquely available both ways: steam-distilled rose otto (citronellol/geraniol-rich) and the solvent-extracted absolute (richer in phenylethyl alcohol), per compositional work.

What this means in practice

  • They’re thicker and more concentrated, absolutes are often semi-solid and intensely aromatic; use tiny amounts.
  • They may carry trace solvent, if you want strictly solvent-free, choose CO2 extracts or distilled versions (like rose otto).
  • They’re expensive, reflecting both the extraction method and the sheer mass of flowers required.
  • Dilute and patch-test, jasmine and rose contain recognised allergens (benzyl benzoate, linalool, geraniol).

Bottom line

Jasmine, vanilla, and rose absolute are the aristocrats of the aroma world, captured by solvent or CO2 rather than distillation because heat would destroy them. Treat them as precious, concentrated accents, use them a drop at a time, and know that “absolute” and “essential oil” aren’t the same thing.

References

This article is educational and not medical advice.