Short answer
A flanker is a new fragrance built on an existing one — keeping the parent's recognizable core while changing a facet: a fresher summer version, a more intense one, a different season or audience. Develop it from the parent's current formula, decide in writing which part is the "DNA" to keep and which part changes, record the flanker as its own formula linked to the parent, and treat it as a new product for every check: restrictions, stability, safety assessment, notification and labeling. Done well, a flanker reuses the parent's work; done carelessly, it becomes a second, drifting copy nobody can trace.
Why brands make flankers
- To extend a successful scent to new seasons, occasions or customers.
- To offer a stronger or lighter version (an "intense" or an "eau fraîche").
- To refresh interest without abandoning a known identity.
From the lab's side, a flanker starts with something most new projects lack: an approved formula, its evaluation history and production experience.
Step 1: define the DNA
Before changing anything, write down what makes the parent recognizable: usually its core accord and one or two signature materials. Then write what the flanker should change. A short brief does this; see how to write a fragrance brief.
| Parent (EDP-014 v6) | Flanker | |
|---|---|---|
| Keep | Woody-amber core; Iso E Super and ambroxide signature | Same core, recognizably |
| Change | Peppery bergamot opening | Brighter, greener citrus; lighter overall |
| Format | Eau de parfum | Eau de toilette strength |
Step 2: develop from the parent
- Start from the parent's current approved version, not an old file.
- Give the flanker its own formula code, linked to the parent ("EDP-014-F1" or a "derived from" note).
- Change one aspect at a time, as with any development; see how to adjust a perfume formula.
- Evaluate every trial against the parent, side by side, so the family resemblance stays visible.
If the flanker uses a different concentration, the balance shifts: top notes read differently at eau de toilette strength. Re-balance rather than simply diluting the parent's concentrate.
Step 3: treat it as a new product
- Restrictions: check every restricted material at the flanker's concentration, in its product category; see how to calculate IFRA compliance.
- Allergens: recalculate declarations; different materials and strength change them.
- Stability: test the flanker; the parent's results do not transfer automatically.
- Safety assessment and product file: a new formula is a new product for the markets that require these. Much of the parent's documentation can be reused, but the assessment must cover the flanker's actual formula.
- Notification, registration or listing: follow the rules of each market where it is sold; see perfume regulations by market.
- Specification and batch documents: its own, not the parent's.
Keeping the family traceable
A product family needs a simple map: which products exist, which formula and version each uses, and which is derived from which. When the parent changes — a material is restricted or reformulated for cost — the map shows which flankers share the affected part and need the same change. A where-used search on the changed material finds them too; see how to find every formula that uses a material.
In RUŌOD Lab, duplicating a formula makes a marked copy to start the flanker from, and tags or a collection can hold a product family together; each formula keeps its own code, version and status.
Variants that are not flankers
The same fragrance in a different product — body lotion, shower gel, candle — keeps the scent but changes the base. That is a different task, described in adapting a fragrance to a different product base. Where flankers sit in the life of a business's products is covered in the fragrance development workflow.
Frequently asked questions
How different should a flanker be?
Different enough to be worth buying alongside the parent, close enough to be recognized as related. Testing both with customers, blind, tells you whether you achieved either.
Can a flanker share the parent's batch of concentrate?
Only if it is literally the same concentrate at a different strength, which is a concentration variant rather than a new formula. Even then, check the balance and all the product-specific requirements.
Written and reviewed by the RUŌOD Lab team. This article is general education about perfume formulation and record-keeping; it is not legal, regulatory or safety advice, and the examples are illustrations, not validated commercial formulas. How we write and check these guides.