Patchouli has a reputation problem that has almost nothing to do with what the material smells like.
Where the reputation came from
Patchouli oil became strongly associated with the late 1960s, and specifically with cheap, badly stored oil sold in large quantities. That version was heavy, muddy and slightly sour, and it is what an entire generation still pictures.
Good patchouli, properly aged, does not smell like that. But the association stuck, and a great many people who say they dislike patchouli are describing something they last smelled fifty years ago.
What it actually is
A leaf, from a bushy plant in the mint family grown mostly in Indonesia. The leaves are dried and fermented before distillation, which is unusual and which does most of the work.
Fresh patchouli oil is rough. It improves with age, and unlike almost every other perfumery material it keeps improving for years. Oil that has been sitting for a decade is a genuinely different and better material than the same oil at six months.
The smell
Earthy, but not like soil. There is wood in it, and something sweet, and a dry dustiness at the edges. Well aged, there is a chocolate quality underneath that is very hard to get from anything else.
It is also one of the few materials that reads as dark without reading as heavy, which is why it turns up in so many compositions that are not remotely about patchouli.
What it does in a formula
Mostly structural work. It is an excellent fixative, meaning it slows the evaporation of lighter materials around it and makes a composition last.
It also has a specific talent for stopping sweetness becoming sickly. A vanilla or fruit accord that is on the edge of too much can be pulled back by a little patchouli underneath, and the listener never identifies why it works.
This is why it appears in an enormous number of modern fragrances, including many by people who would tell you they hate patchouli.
Fractions
Modern perfumery often uses fractions rather than the whole oil: parts of it separated out to keep the qualities wanted and drop the ones that are not. That is how you get the woody, chocolatey aspect without the damp earthiness that carries the 1960s association.
Purists object. In practice it has made patchouli usable in compositions where the full oil would dominate everything else.
Ageing, and why it is unusual
Almost every perfumery material is at its best fresh and declines from there. Patchouli is the clearest exception.
Fresh oil is rough and green with a sharp edge. Over years the harsh top compounds oxidise away, and what remains is rounder and sweeter, with noticeably more depth. Producers hold stock deliberately for this reason, and aged patchouli commands a substantially higher price than new.
This is one of the few places in perfumery where waiting is the entire technique.
Where it appears without being named
Patchouli is in a very large proportion of modern fragrances, frequently in compositions marketed on something else entirely.
It is the standard fixative in the chypre family and it is close to universal in the fruity florals that dominate mass-market perfumery, where a fraction of it sits under the sweetness and stops it collapsing into candy.
Which means most people who say they dislike patchouli are wearing it regularly without knowing. What they dislike is the whole unaged oil at high concentration, which is a specific and now fairly rare use of the material.
Pairings
With rose it is one of the oldest combinations in perfumery. The earthiness gives rose somewhere to sit and stops it reading as merely pretty.
With vanilla the chocolate quality comes forward strongly. This pairing is responsible for a great many gourmand fragrances.
With citrus it produces the classic chypre structure: bright at the top, earthy underneath, with very little in between. Difficult to get right and durable when it works.
With oud both materials are dense and the result is airless. Better avoided.
Testing it fairly
Give it four hours. Patchouli is a base material and it does most of its work late, so judging it in the first half hour tells you about whatever is on top of it instead.
And test it without knowing, if you can. This is the material where expectation does the most damage to an honest reaction.
Sourcing
Most patchouli comes from Indonesia, principally Sulawesi, where it is grown by smallholders rather than on plantations. The leaves are dried and fermented locally before distillation, and the quality of that step varies considerably between producers.
This is one of the materials where origin genuinely matters to the result, and where the price difference between a careful producer and a careless one is visible in the oil. Badly dried leaf gives a muddy, slightly mouldy oil that no amount of ageing rescues.
It is also a crop that has held up reasonably well against synthetic replacement, because the full natural oil is complex enough that reconstructions of it remain noticeably flatter.
Worth trying again
If you decided you dislike patchouli, it is worth checking whether you dislike the material or one specific memory of it. Wearing something that contains it, without knowing that it does, is the fairest test, and most people are surprised.
Trying it fairly
If patchouli is a material you think you dislike, the honest test is to wear something containing it without knowing which one it is. HOUSE OF ZIGGIMAY uses it the way most modern houses do, underneath rather than on top, where it holds a composition together and keeps sweetness in check.
A Discovery Box holds five 1.5 ml samples, one of each fragrance we make, which is enough to find out what you actually respond to rather than what you remember.