How Ingredient Concentration Reporting Differs by Market

A maker expanding from Canada into other markets asked us why she couldn't just send her Canadian ingredient table to a new regulator and be done with it. The formula hadn't changed. The percentages hadn't changed. But the answer is that the table itself needs reshaping, because "how much of each ingredient is in here" is a question every market asks slightly differently, even when the underlying data is identical.

Why a single spreadsheet doesn't travel well

It's tempting to think of concentration reporting as one universal fact about a formula, ingredient X is 2% of the product, and that's just true everywhere. The number is the same everywhere. What differs is what a regulator wants to see, in what format, attached to what other documentation, and under what naming convention.

Canada's system is built around a notification model. You list every ingredient by INCI name with a concentration or a concentration range, submit it through the Cosmetic Notification System as a Cosmetic Notification Form, and you receive a Cosmetic Notification (CN) number, without pre-market approval. The percentage data sits inside that one filing.

The EU works from a different structural foundation entirely. Under Regulation (EC) No 1223/2009, you notify through the CPNP portal, but the concentration data doesn't stand alone the way it does on a CNF. It's part of a larger Product Information File, alongside a Cosmetic Product Safety Report signed by a qualified safety assessor. The percentage table exists to support that safety assessment, not as a standalone declaration.

What actually changes between markets

Element	Canada	European Union
Filing mechanism	Cosmetic Notification Form via Cosmetic Notification System	Notification via CPNP portal
Nature of the filing	Notification, not pre-market approval	Notification, tied to a broader safety file
Who signs off	No named safety assessor requirement on the CNF itself	Cosmetic Product Safety Report signed by a qualified safety assessor
Local representative required	No	Yes, a Responsible Person established in the EU
Supporting documentation	Ingredient list with concentrations/ranges	Full Product Information File, including the CPSR
Restricted ingredient reference	Cosmetic Ingredient Hotlist	EU's own annexes under Regulation 1223/2009

Markets outside these two work differently still. Australia's AICIS framework regulates cosmetic ingredients as industrial chemicals through an Inventory and introduction categories, rather than asking for a per-product concentration filing the way Canada and the EU do. The UK, post-Brexit, runs its own notification path through the OPSS Submit Cosmetic Product Notification service, separate from the EU's CPNP even though the underlying product might be identical to what's sold in Europe.

Why this trips up multi-market sellers

The concentration numbers themselves rarely need to change between markets, your olive oil percentage is your olive oil percentage no matter who's asking. What changes, and what causes real delays, is:

• Reformatting for the receiving system. A CNF-shaped ingredient table doesn't drop cleanly into a CPNP submission or an SFDA electronic filing, the fields and expected structure differ.
• Different restricted-ingredient lists. A concentration that's fine against Canada's Hotlist might sit differently against the EU's annexes, so the same percentage needs checking twice, against two different reference lists.
• Local representation requirements. The EU requires a Responsible Person established in the EU. That's a structural requirement layered on top of the ingredient data, not something you can solve with better spreadsheet formatting.
• Supplier blend math has to be redone per submission. If your formula includes a supplier blend, you're multiplying the blend's component percentages by its use level to get real concentrations, and that calculation has to feed correctly into whichever format the target market expects.

A practical approach

If you're planning to sell into more than one market, keep your master concentration data in one internal reference, the real, accurate percentage of every ingredient in your finished product, INCI name and CAS number attached where possible. Treat that as your source of truth. Then build each market's filing from that source rather than trying to adapt one country's completed filing into another's format, which is where details get lost or miscopied.

This is part of why Cosmetic Comply is built the way it is. Canada is live today, mapping a maker's ingredient list to INCI names and CAS numbers, expanding supplier blends, and screening against the Hotlist before a human reviewer signs off and the notification gets filed. The US, EU, and Australia paths are on the way, built on that same underlying formula data, so a maker's actual concentration numbers don't need to be reconstructed from scratch every time a new market opens up.