What Is an Accord in Perfumery? (And How It Differs From a Note)

If you read about perfume for long enough, you will hit the word accord. It turns up in brand copy, in reviews, and in the way perfumers talk about their own work — usually without anyone stopping to define it. This is a short, practical explanation of what an accord actually is, why it is not the same thing as a note, and how perfumers build them.

An accord is several materials that smell like one thing

Here is the definition, and everything else follows from it: an accord is a blend of two or more materials that, once balanced, stops smelling like its parts and starts smelling like a single thing.

The individual ingredients lose their separate identities. What you perceive is a new, unified impression that none of them produced on its own.

The comparison everyone reaches for is music, and it is a good one. A chord is three notes played together. You can name them individually if you concentrate, but what you actually hear is one sound with a character of its own — bright, sad, unresolved. An accord works the same way. The materials are still in there. Your nose just stops filing them separately.

So what's the difference between a note and an accord?

This is the part that trips people up, partly because brand copy uses both words loosely.

• A note is a single scent impression — one material, or one recognisable smell. Bergamot is a note. Vanilla is a note. "Top, heart and base notes" describe when different notes appear as a perfume evaporates. (We wrote about that structure in top, heart and base notes explained.)
• An accord is a combination built to read as one note.

A useful way to hold the difference: notes are the vocabulary, accords are the phrases.

There is a second, sneakier reason accords exist. Some smells cannot be extracted at all. There is no lily of the valley oil, no fresh-rain oil, no sea-spray oil. If a perfumer wants those, they must be constructed from other materials until the blend reads as the thing. Every "marine" note you have ever smelled is an accord. So is most "leather". So is nearly every "oud" in a mainstream fragrance — a point we made in our piece on oud.

The famous accords you have already smelled

Some accords have been reused for so long that entire fragrance families are named after them.

Chypre. Citrus at the top — usually bergamot — over cistus labdanum, with a mossy, slightly animalic base built on oakmoss. The name is simply the French word for Cyprus. François Coty's Chypre of 1917 was influential enough that everything built on that skeleton since has been called by its name. The whole point of the accord is the contrast: something bright and fleeting sitting on something dark and earthy.

Fougère. French for "fern" — which is a joke, because ferns have almost no smell. The accord is lavender, coumarin (which smells of hay and almond) and oakmoss, and it originated in a single perfume in the late nineteenth century that was named after the plant it could not possibly resemble. If you have ever smelled a classic men's cologne, you have smelled this accord.

Amber. Not fossilised resin, despite the name. It is a constructed warmth — typically labdanum and vanilla with resins and balsams — and it is one of the oldest reusable ideas in the business.

Notice what these have in common. None of them is an ingredient. Each is a recipe for an impression that perfumers have been reinterpreting for a hundred years or more.

How perfumers actually build one

The most widely taught approach comes from Jean Carles (1892–1966), a French perfumer who worked in Grasse and founded the Roure perfumery school in 1946, becoming its first director. Givaudan, which absorbed Roure, has claimed that one perfumer in three worldwide trained at one of those schools — so this is not a niche technique.

The Carles method is almost brutally simple. Take two materials. Make a row of small beakers — five, or ten — each holding a different ratio of the two. Smell along the row and find the ratio where the pair stops arguing and starts agreeing. That is your accord. Then add a third material and repeat. Then balance completed accords against each other until you have a perfume.

It sounds mechanical. It is, deliberately: the method exists to train a nose systematically rather than by inspiration. Carles himself went anosmic — he lost his sense of smell — towards the end of his life, and is credited with composing from memory of materials alone. There is no better illustration that perfumery is a structured craft and not just a gift.

How we work with accords at SHŌ ITO

We are not going to publish our formula, and none of the above is a coded hint about it. But the way accords work does shape how we brief.

We do not hand a perfumer a shopping list of notes. A list — neroli, vetiver, amber — is the least useful brief you can give, because it specifies the vocabulary while saying nothing about the sentence. It also quietly puts an amateur in charge of decisions that a trained nose should be making.

What we brief is the impression: the scene, the temperature, the feeling in the room, what should still be there an hour later. Then the perfumer decides which materials, in which ratios, will produce that impression once they fuse. That is exactly the work an accord describes, and it is not work we are qualified to do for them.

Two things follow from that, in practice.

The first is that we judge the whole, not the parts. When a trial arrives, the question is never "can I detect the cedar?" It is "does this smell like one thing, and is that thing the thing we asked for?" A composition where you can pick out every ingredient usually is not finished.

The second is patience. Accords do not arrive fully formed the moment the materials are mixed. A freshly blended perfume needs to rest before it settles into itself — the process we described in what maceration is and why we wait. Judging an accord too early gives you the wrong answer about a perfume that has not become itself yet.

The short version

• An accord is two or more materials blended until they read as a single smell — perfume's equivalent of a chord.
• A note is one scent impression; an accord is a combination engineered to behave like one.
• Accords also make possible the smells that cannot be extracted — marine, leather, most "oud", lily of the valley.
• Chypre, fougère and amber are famous accords so durable that whole families are named after them.
• They are built systematically, most classically by the Jean Carles method: two materials at a time, ratio by ratio, until they agree.

Next time a perfume description lists ten notes, it is worth asking how many things it actually smells like. If the answer is one, someone did their job.

If you enjoy this kind of thing, you might also like how to find your fragrance family or natural versus synthetic ingredients. And if you would like the occasional piece like this in your inbox, our newsletter The Hidden Nose is where we send them.