The 31 July 2026 EU Fragrance Allergen Deadline — and the Batch Trap Most Brands Miss

For two decades, the EU asked cosmetic brands to call out a familiar set of 26 fragrance allergens on the label. That settled world ends on 31 July 2026. From that date, the significantly expanded fragrance allergen list introduced by Regulation (EU) 2023/1545 must be declared above threshold — and the way the deadline is written catches more products than the headline change suggests. Most coverage of this change repeats the same three facts: the list grew, the thresholds stayed the same, and there is a transition period. All true. None of it is the part that actually trips brands up. The harder problem sits in one phrase buried in the legal text — placed on the market — and in the chemistry of the natural ingredients many modern formulas are built on.

The deadline that runs in the wrong direction from how brands think

The two dates everyone quotes are 31 July 2026 and 31 July 2028. The instinct is to read them as “old products get the long runway.” That reading is backwards.

• 31 July 2026 — any product placed on the EU market from this date must comply with the expanded list. This is the demanding deadline, and it hits new output first.
• 31 July 2028 — products already made available on the market before the 2026 date may continue to be sold through. This is the relief valve, and it only covers stock that was already in the channel.

The trap is the legal meaning of “placed on the market.” Under EU harmonisation law, a product unit is placed on the market the first time it is made available in the Union — and each unit is placed only once. In practice, that means a new batch first made available on the EU market after 31 July 2026 constitutes a new placement on the market, even if the same SKU has been on European shelves for years. The 2028 sell-through does not stretch to cover it. So the comfortable mental model — “my existing range is fine until 2028” — is wrong for everything you manufacture or import from the deadline onward.

Why a compliant label can quietly go out of compliance

Here is the scenario that turns a paperwork exercise into a recall risk. Suppose a leave-on serum contains a citrus or myrtle essential oil. You calculate the allergen contributions, find coumarin sitting at 0.0009% in the finished product — just under the 0.001% leave-on threshold — and you correctly leave it off the label. Then the next drum of essential oil arrives. Natural extracts are agricultural products; their allergen profile drifts from harvest to harvest and batch to batch. The new lot is a little richer in coumarin. Your finished product now sits at 0.0011%. Nothing changed on your label, your formula card, or your supplier contract — but the product is now non-compliant, and every unit built from that batch is a fresh placement on the market that should have declared coumarin. This is the failure mode that the simple “the list got bigger” framing completely hides. The expanded list does not just add substances to check once; it widens the surface area for batch-level drift across dozens of new natural-origin allergens — limonene, linalool, geraniol, citronellol and others that are abundant in the essential oils used in exactly the botanical, “clean,” and fragrance-free-positioned products that market themselves on naturalness. Accurate fragrance allergen declaration, in other words, is no longer something you settle once at the formulation stage.

“Natural” is the exposed category, not the safe one

A persistent misconception is that natural and minimalist formulas are insulated from allergen rules. The regulation makes no such distinction. A declarable allergen must appear in the ingredient list whenever it exceeds the threshold, regardless of whether it originates in a synthetic fragrance compound, a supplied “parfum” mixture, or a single-origin essential oil. Because essential oils are concentrated cocktails of exactly these substances, a botanical-forward product can carry more declarable allergens than a conventional perfumed one. The brands most likely to be caught off guard are therefore the ones whose marketing leans hardest on purity and simplicity.

The thresholds, stated plainly

• Leave-on products (creams, serums, perfumes, deodorants): declare each regulated allergen above 0.001% in the finished product.
• Rinse-off products (shampoos, washes, cleansers): declare each regulated allergen above 0.01%.

One subtlety worth flagging: certain substances that convert into known allergens through air oxidation or skin activation — prehaptens and prohaptens — are treated as equivalent to their activated forms. That means oxidation during a product’s shelf life, not just the formula as filled, is part of the compliance picture, which is another reason stability and packaging belong in this conversation.

Canada is moving in parallel — plan once, comply twice

Brands marketing in both the EU and Canada should note that Health Canada is implementing closely aligned fragrance allergen disclosure requirements on a similar timeline, making it practical to perform a single harmonised allergen review. An initial list of 24 allergens applies from 12 April 2026 for both new and existing products, and the expanded EU-aligned list applies to products newly placed on the Canadian market from 1 August 2026, with sell-through for prior stock into 2028. For a brand selling into both markets, this is an opportunity rather than a doubling of work. A single, well-documented review — built on current supplier data and batch-aware calculations, and structured around the stricter requirements from the start — can satisfy both regimes at once.

A compliance approach built for drift, not just for the deadline

Because the real risk is recurring rather than one-off, the most resilient response treats allergen control as an ongoing process, not a single relabelling project:

1. Map your exposure. Flag every SKU containing a fragrance mixture, essential oil, or aromatic botanical extract. This is your shortlist of products in scope.
2. Get batch-level supplier data. Ask fragrance houses and essential-oil suppliers for full allergen breakdowns — and crucially, for the expected range across batches, not a single nominal figure.
3. Calculate against the worst case. Multiply each allergen’s concentration in the raw material by its percentage in the finished formula, and assess the high end of the batch range against the threshold — not the average.
4. Build margin where you can. If an allergen sits just under threshold on nominal data, a small formulation adjustment now is cheaper than an emergency relabel or a held shipment later.
5. Update the documentation trail. Reflect the new allergen picture in your Product Information File and, where the Cosmetic Product Safety Report is due for review, in the CPSR. Keep version control so you can show how the assessment evolved.
6. Put a batch check in place. Add an incoming-QC step that recalculates allergen levels for each new lot of natural raw material, so a drift is caught before it reaches a printed label.

What brands should do before 31 July 2026

If you need a short, actionable checklist to brief your team, the essentials of fragrance allergen labelling compliance come down to six steps:

• Review all fragranced products, including those built on essential oils and botanical extracts.
• Obtain updated allergen data from fragrance and raw-material suppliers, with batch ranges where possible.
• Recalculate finished-product allergen concentrations against the leave-on and rinse-off thresholds.
• Update labels and ingredient lists where any allergen exceeds its threshold.
• Update the Product Information File and, where due, the Cosmetic Product Safety Report.
• Verify future batches of natural raw materials so a later drift does not breach a printed label.

The bottom line

The visible change is that the fragrance allergen list has grown substantially. The structural one is quieter: from 31 July 2026, every new batch you place on the EU market is judged against the full expanded list, and the natural ingredients that make many products distinctive are precisely the ones whose allergen content refuses to stay still. The brands most likely to encounter compliance issues will not be those unaware of the deadline, but those that assume compliance is achieved simply by updating a label once. Fragrance allergen compliance is increasingly a process — one that depends on supplier documentation, batch monitoring and ongoing regulatory oversight. Brands that build that process will clear both the EU and Canadian deadlines and stay clear afterwards.

Frequently asked questions

When does the expanded EU fragrance allergen list apply?

Under Regulation (EU) 2023/1545, cosmetic products placed on the EU market from 31 July 2026 must declare the significantly expanded fragrance allergen list above threshold. Products already made available on the market before that date may continue to be sold until 31 July 2028.

What are the disclosure thresholds for fragrance allergens?

A regulated allergen must be declared in the ingredient list when it exceeds 0.001% in leave-on products and 0.01% in rinse-off products, regardless of whether it comes from a fragrance mixture or a natural extract.

Do natural and “clean” cosmetic products have to declare fragrance allergens?

Yes. A regulated allergen must be declared even when it arrives as a natural constituent of an essential oil or botanical extract. Natural origin does not exempt a product, and botanical-forward “clean” formulas are often the most exposed because essential oils are concentrated sources of these substances.

Why can a compliant fragrance allergen label later breach the rules?

The allergen content of natural extracts drifts from batch to batch. An allergen sitting just under the threshold in one batch of essential oil can exceed it in the next, so a label that was compliant when printed can become non-compliant for later batches even though nothing on the label changed.

Does the Canada fragrance allergen deadline match the EU?

Closely. Canada applies an initial list of 24 allergens from 12 April 2026 for new and existing products, and the expanded EU-aligned list to products newly placed on the Canadian market from 1 August 2026, with sell-through for existing stock into 2028.

What should brands do before the 31 July 2026 deadline?

Review all fragranced products, obtain updated allergen data from suppliers with batch ranges, recalculate finished-product allergen concentrations against the thresholds, update labels where required, update the Product Information File and Cosmetic Product Safety Report, and verify future batches of natural raw materials. CosmeReg helps brands identify products in scope, review labels and Product Information Files, and build batch-level allergen controls for the EU and Canadian markets. Talk to our regulatory team about a fragrance allergen review. This article is provided for general information on regulatory developments and does not constitute legal advice. Specific compliance decisions should be confirmed with a qualified safety assessor or regulatory adviser.