How Hazard Characteristics Drive AICIS Categorisation

The instinct with AICIS is to think about it the way you'd think about a cosmetic notification, list your ingredients, check them against a list, done. It doesn't work quite like that, and the hazard side of categorisation is where the framework diverges most from what cosmetic makers are used to.

Cosmetic ingredients, industrial chemical framework

AICIS regulates cosmetic ingredients as industrial chemicals, using an Inventory and a set of introduction categories rather than a per-product notification. That means the same substance, say a preservative or a UV filter, gets evaluated the way any industrial chemical would, with hazard characteristics as a central input alongside exposure factors like volume.

This matters because two ingredients with the same cosmetic function, the same INCI-adjacent purpose in a formula, can land in very different categories if their underlying hazard profiles differ. A mild, well-characterized emollient and a chemically reactive preservative are not treated the same just because both end up in a lotion.

What "hazard characteristics" actually means here

Hazard classification in this context is about the intrinsic properties of the chemical itself, independent of how much of it you're using or in what product. Relevant characteristics generally include things like:

• Whether the chemical is already listed on the Inventory with known characteristics, or is new and requires assessment
• Toxicological hazard classification, including any known concerns for human health
• Environmental hazard classification
• Physicochemical properties that affect how the substance behaves and how it should be handled

A chemical that's well-established, already on the Inventory, and has a benign hazard profile is generally going to sit in a lower-obligation category than a novel chemical with hazard flags, even at similar introduction volumes.

Hazard and exposure work together, not separately

This is the piece that's easy to oversimplify. Categorisation isn't "high hazard equals high category" in isolation. It's hazard combined with exposure, and exposure is shaped by things like introduction volume and how the chemical is actually used in the finished product. A chemical with real hazard flags but very limited, well-controlled exposure can sit differently than the same hazard profile at scale.

Input	What it reflects
Hazard classification	Intrinsic toxicological and environmental properties
Inventory status	Whether the chemical is known and characterized, or new
Exposure factors	Introduction volume, use pattern, and how the chemical reaches people or the environment
Resulting category	Determines what obligations apply to your introduction

Where cosmetic makers get surprised

The most common surprise is assuming that because an ingredient is common and widely used in cosmetics elsewhere, it must automatically sit in a low-obligation AICIS category. That's often true, but not automatically true, and it's worth actually checking rather than assuming familiarity equals low hazard categorisation. A preservative that's completely standard in North American and European formulas can still carry hazard characteristics that put it in a category with more expectations attached under AICIS's framework.

The other common surprise is with newer or more novel actives, peptides, newer UV filter chemistries, novel plant extracts processed in unusual ways. These are exactly the ingredients most likely to lack established Inventory history, which pushes them toward categories that require more assessment before introduction.

A practical approach

If you're formulating for the Australian market, it helps to sort your ingredient list into two buckets early: well-established substances with a long history of use and known hazard characteristics, and newer or less common ones. The second bucket is where you want to spend your due diligence time, checking Inventory status and hazard classification before you commit a formula to that market, rather than discovering a categorisation surprise after you've already built out packaging and marketing around a specific formula.

Cosmetic Comply currently handles Canadian notifications end to end, with Australia among the markets on the roadmap. The ingredient-level discipline that AICIS rewards, knowing exactly what's in your formula, where it maps to on established chemical inventories, and at what real concentration, is the same discipline that makes any market's filing process smoother, so it's worth building that habit into your formulation process regardless of which market you're notifying in first.