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A flanker is a new version of an existing perfume that keeps the original name and adds a suffix such as Intense, Elixir, Eau Fraîche or the name of a season. Its formula may sit close to the original or far from it; the suffix has no common definition.

One name, many endings

On a perfume shelf, one name can appear five or six times. The first version stands alone. Later versions carry an extra word: Intense, Elixir, Eau Fraîche, Absolu, Sport, Night, or a season, a year. Each bottle is a separate scent, even though the name sounds like one.

In the perfume trade, these later versions are called flankers. The short definition: a flanker is a variation on an existing perfume that keeps the original name with an added suffix. Its formula may be close to the original, or so different that only the name is shared.

So the question of what a flanker is comes with a second one: how close is it to the original. There is no general answer. The suffix is not a technical term, no regulation binds it, and each house uses it in its own way.

This piece reads flankers through the structure of scent: which parts are usually kept, which are usually changed, and how a new version helps to reread the original.

What a flanker is

A perfume has three layers of identity. The first is the formula: the list of materials and their proportions. The second is the structure of the scent, which a wearer perceives as a shape. The third is the name, the bottle and the imagery around them. A flanker keeps the third layer, and keeps the second to varying degrees.

By naming convention a flanker differs from a change of strength, but the line is blurred. An EDT and a Parfum of the same name may already be two different formulas, as the piece One scent, four strengths records. When the new version adds a word such as Intense, sellers usually call it a flanker; when only EDP becomes EDT, they usually do not.

A flanker also differs from a reformulation. An older perfume may have its formula changed for new rules on materials while keeping its name, with no suffix. Oakmoss is the familiar case: since the EU banned atranol and chloroatranol in cosmetics, many formulas using oakmoss had to be adjusted. That is revising the original, not making a flanker.

Sometimes a name is reissued with a new formula after years of absence. Houbigant's Fougère Royale, the founding bottle of the Fougère family, was reissued in 2010 with a new formula. One name, two periods, two formulas.

Keeping the accord, changing a tier

At the centre of a perfume there is usually an accord: a few materials combined so that the nose reads them as one new smell. This accord is the shape that someone familiar with the original recognises. A flanker that wants to stay linked to the original usually keeps that accord, or a close version of it.

The part most often changed is the top. The top leaves in the first minutes, so replacing citrus with fruit, adding spice or a green note makes the new version different on opening without breaking the main shape. On a pyramid, this means replacing the top compartment and keeping the two below.

Another way is to shift a facet of the central material. Rose has lemony, honeyed, spicy and winey facets. A flanker may bring the honey forward and hide the lemon, using modifiers added in small amounts. The scent is still rose, but it leans another way.

A third way is to change strength and base together, making the new version denser, warmer and longer lasting. This is the usual direction for suffixes that suggest intensity. Each way starts from the same question: which part of the original cannot be removed.

Raising the strength does more than make a scent louder. When the share of concentrate in alcohol changes, the base has more material to remain, while molecules with low odour thresholds do not grow stronger in the same proportion. The balance between tiers shifts. So a stronger version usually needs rebalancing, not just more concentrate.

Intense, Elixir, Eau Fraîche

Flanker suffixes follow an unwritten grammar. They borrow words that already mean something in the trade, then use them more loosely. None has a legal definition, and their meaning is clear only next to the original.

Intense usually signals a stronger version: higher concentration, a denser base, or both. Elixir usually goes further in the same direction, with heavier resins, vanilla or woods. Absolu and Extrait are used in this sense too. But one house's Intense can be lighter than another house's original; the word has meaning only within one perfume line.

Eau Fraîche goes the other way. In the familiar language of concentration, Eau Fraîche is usually 3 percent concentrate or less, lighter even than Eau de Cologne. As a flanker suffix, it usually signals a brighter version, with more citrus and green, lighter than the original.

Suffixes naming a season, a year or a place say nothing about structure. They are often attached to limited releases, sometimes sold only for a while. For these bottles, the only way to know the scent is to smell it.

Why the trade makes flankers

A perfume name gathers memory over years. Someone familiar with a scent recognises the bottle and the name, and expects a certain shape. A flanker reuses that memory for a new scent, instead of starting a name from nothing.

This is a commercial reason, and it explains why a successful perfume line often has many flankers. But flankers also have reasons within perfumery itself. A good accord can carry many variations: one for a hot climate, one for evening, one leaning toward wood. A flanker is a way of trying those variations under one shared name.

The history of scent classification has a case running the other way. Coty's Chypre of 1917 was the name of one bottle; later, other houses built scents on the same frame of bergamot, oakmoss and labdanum, and the name became the name of a family. Houbigant's Fougère Royale of 1882 is similar. Here the name left one house and became the name of a structure, as the history of scent classification records.

The flanker is the reverse of that story. The name stays within one house, while the structure changes. On one side a structure carries a bottle's name; on the other a bottle's name carries many structures.

Reading the original through the new

Setting a flanker beside its original on two blotters is an effective exercise in reading scent. What remains the same after an hour is usually the central accord, the part the perfumer considers essential. What differs shows the direction in which the perfumer tried to push the scent.

The comparison works best in time. Smell both strips after a few minutes, while the top is clear; after an hour or two, as the heart emerges; after half a day, when only the base remains. Two scents may differ sharply in the first minute and nearly match by the fourth hour, or the reverse.

The next step is to place both in a fragrance family. A flanker may share the original's family but belong to another subfamily: both floral, one floral fruity, one floral woody. Some flankers leave the original family altogether. The piece The families of scent goes into reading families and subfamilies.

After one such comparison, the original is often understood better. What the flanker dropped shows which parts of the original were ornament; what it kept shows which part is the spine.

The pyramids printed on the two boxes can also be set side by side, with one caution. Printed notes describe an impression, not a formula. Words that change between the two pyramids show the direction the perfumer wants to suggest; words that stay usually point to the central accord. The blotter remains the place to check what the paper says.

One name can carry many scents.

One structure can carry the name of a bottle.

Between the two lies the accord that does not change.