Why are fragrance allergens listed on perfume packaging?

EU Cosmetics Regulation requires fragrance substances identified as allergens to be listed by name on product labels if present above defined thresholds. This allows consumers who know they are sensitized to a specific compound to identify and avoid products containing it.

What do the INCI names on perfume packaging mean?

INCI (International Nomenclature of Cosmetic Ingredients) names are the standardized chemical or biological names used internationally for cosmetics labeling. A name like 'linalool' or 'limonene' refers to a specific chemical compound present in the formula, not a brand or marketing term.

Does the presence of a listed allergen mean I will have a reaction?

No. The listed compounds are allergens in the clinical sense -- they have the potential to cause sensitization or allergic contact dermatitis in susceptible individuals. Most people have no reaction. The list exists for those who have already been sensitized and need to avoid specific compounds.

Are allergen disclosures the same in all countries?

No. The EU list is the most comprehensive regulatory requirement. The US FDA does not currently require individual fragrance ingredient disclosure beyond the generic term 'fragrance' in most cosmetics. The UK, post-Brexit, has adopted the EU allergen list as part of its retained domestic law. Japan, Canada, and Australia have their own cosmetics labeling regulations that partially overlap with the EU list.

Why do some niche perfumes list 'parfum' as the only fragrance ingredient?

Niche perfumes sold outside the EU or to non-EU markets may use the generic 'parfum' listing without individual allergen disclosure, as this is legally sufficient in those markets. EU-market products must list individual allergens above threshold concentrations. Check the product's market destination and look for country-specific labeling.

What is the disclosure threshold for fragrance allergens?

Under EU regulation, allergens must be listed if present at or above 0.001% (10 ppm) in leave-on products like perfume. For rinse-off products, the threshold is 0.01%. EU Regulation 2023/1545 maintains these thresholds for the original 26 allergens and sets the same thresholds for the 30 newly added substances.

How should I use the allergen list if I have sensitive skin?

If you have been diagnosed with contact allergy to a specific fragrance compound (through patch testing with a dermatologist), check the allergen list on any new fragrance product for that compound's INCI name before purchasing or applying. Consulting a dermatologist for patch testing is the recommended approach for identifying specific fragrance sensitizers.

Why is the allergen list on perfume packaging?

The essentials

The chemical names printed in small type on perfume packaging in the European Union are not marketing information. They are legally required allergen disclosures under EU Cosmetics Regulation 1223/2009. The regulation flows from the European Scientific Committee on Consumer Safety (SCCS) finding that certain aromatic compounds are documented contact allergens capable of triggering allergic contact dermatitis or sensitization in susceptible individuals (SCCS Opinion on Fragrance Allergens, 2012 and 2023 updates).

The mechanism is straightforward. Consumers diagnosed through clinical patch testing with sensitization to a specific compound need to know whether a given product contains that compound. The generic ingredient term parfum, which was standard before the 2003 disclosure regime, gave no information about which specific aromatic molecules were present. Mandatory disclosure of named substances above the threshold concentration (10 parts per million for leave-on products, 100 ppm for rinse-off) closes that gap and gives patch-tested consumers actionable information.

The presence of a name on the allergen list does not signal that the product is harmful to the general population. Most consumers experience no reaction to any of the listed substances at the concentrations used in compliant fine fragrance. The list is a communication tool aimed at the minority who are clinically sensitized and need to screen products against their specific trigger. The 7th amendment to Regulation 1223/2009, applied in 2023, expanded the original 26-substance list to 81 declarable substances, which is why ingredient lists on current niche perfumery packaging are noticeably longer than they were a decade ago (RIFM, accessed 2026-05-29).

The regulation behind the label

EU Cosmetics Regulation 1223/2009 is the consolidated framework that governs the safety and labeling of cosmetic products placed on the European market. Annex III of the regulation lists substances subject to restriction; Annex II lists substances prohibited outright. Fragrance allergen disclosure sits within this framework as a transparency rather than a prohibition: the substances remain permitted at compliant concentrations, but their presence must be communicated to the consumer through the printed ingredient list.

The legal mechanism for revising the list runs through SCCS opinions, which review the available scientific evidence and recommend regulatory action. Two opinions are central to the current framework: SCCS/1459/11 in 2012, which consolidated evidence on the original allergens and identified candidates for expansion, and SCCS/1643/22 in 2022, which informed the 7th amendment.

INCI names and how to read them

The labels use International Nomenclature of Cosmetic Ingredients (INCI) names, a standardized system maintained by the Personal Care Products Council. INCI names are either systematic chemical names (linalool, limonene, geraniol) or Latin binomial names for natural extracts (Evernia prunastri extract for oakmoss). The same name identifies the same substance regardless of which brand uses it, which is what makes the system reliable for consumers with diagnosed sensitivities.

The substances most often encountered on niche perfumery labels are linalool (in lavender, bergamot, coriander), limonene (citrus peel oils), geraniol (rose and geranium), eugenol (clove, cinnamon, rose), isoeugenol (carnation, now heavily restricted), citronellol (rose and geranium), coumarin (tonka, lavender), cinnamal (cinnamon), hydroxycitronellal (lily of the valley accord), and Evernia prunastri extract (oakmoss). These appear in descending order of declarable concentration within the wider INCI list.

From 26 to 81 declarable substances

The original 26-substance list was set in 2003 based on the best available evidence at the time. Over the following two decades, RIFM and independent dermatological research identified additional compounds with documented sensitization potential, including a number of oxidation products of materials already on the list. The most significant addition was the formal recognition of linalool hydroperoxide and limonene hydroperoxide as separate declarable substances, since their sensitization profiles are substantially higher than those of the parent molecules.

The 7th amendment also added several natural extracts, additional aldehydes, and synthetic materials whose patch-test profiles supported inclusion. The full updated list is contained in Annex III of Regulation 1223/2009 as amended. Industry has been adapting packaging across 2023 to 2026 to reflect the new requirements, which is why ingredient lists on niche perfumery bottles purchased today often differ in length from those on the same fragrance purchased two or three years earlier even when the formula has not changed.

The US framework, compared

The United States does not currently require individual fragrance ingredient disclosure on cosmetic packaging. Fragrance content can be aggregated under the term fragrance on the ingredient list, which protects the formula as trade secret but gives no information to sensitized consumers. The 2022 Modernization of Cosmetics Regulation Act (MoCRA) introduced new safety and reporting obligations but did not extend mandatory ingredient disclosure to fragrance components.

This creates a meaningful difference in the information available to US versus EU consumers buying the same niche bottle. Some niche houses voluntarily publish full ingredient lists on their websites or printed inserts, but the practice is not legally required in the US market and remains uneven across the segment (Perfumer & Flavorist, accessed 2026-05-29).

Using the list in practice

For a consumer with a patch-test-confirmed sensitization, the practical workflow is: identify the trigger INCI name from the dermatology report, locate the printed ingredient list on the product box or insert, and read for the trigger name. If the name is present, the product is not appropriate for use; if it is absent, the product is unlikely to contain the trigger at declarable concentration but could still contain it at trace levels below the threshold.

For consumers without a confirmed sensitization, the list is informational rather than prescriptive. Reading the names is a way to understand the structural ingredients of a composition without revealing the proprietary formula, and to flag substances of personal concern based on past reaction history. Online tools such as INCI Decoder translate INCI nomenclature into plain language for consumers who want context on individual substances.

Sources

EU Cosmetics Regulation (EC) No 1223/2009, consolidated text including the 7th amendment expanding the fragrance allergen list to 81 substances, Official Journal of the European Union, 2023.
EU Scientific Committee on Consumer Safety (SCCS), Opinion on fragrance allergens SCCS/1459/11 (2012) and updates including SCCS/1643/22 (2022), European Commission.
Research Institute for Fragrance Materials (RIFM), peer-reviewed safety assessments and allergen monographs supporting the SCCS framework. Accessed 2026-05-29.
Perfumer & Flavorist, industry articles on allergen disclosure, INCI labeling practice, and the US versus EU regulatory split. Accessed 2026-05-29.

Published 29 May 2026 · Updated 30 May 2026 · Last fact check: 30 May 2026 · Osmetheca · Editorial team