Prohibited vs Restricted on the Hotlist: The Real Difference

I've reviewed formulas where the maker was convinced they'd done everything right because they'd "checked the Hotlist." When I asked which column their ingredient fell under, they didn't know there were two. That gap, treating the Hotlist as one flat list instead of two very different categories, is where a lot of avoidable filing problems start.

Two columns, two completely different meanings

The Hotlist isn't a single list of banned substances. It separates ingredients into prohibited and restricted, and those words aren't interchangeable.

Prohibited means exactly what it sounds like. The substance cannot appear in a cosmetic sold in Canada, period. There's no concentration low enough, no use category exception, no clever formulation workaround. If it's on the prohibited side, it doesn't belong in the product at all.

Restricted means the substance is allowed, but only under specific stated conditions. Those conditions typically come as one or more of:

• A maximum concentration limit
• A restriction to certain product types (leave-on versus rinse-off, for example)
• Required warning statements on the label
• Purity or specification requirements

A restricted ingredient used correctly, within its stated limit and conditions, is compliant. The same ingredient over that limit, or used in a product category it wasn't cleared for, is not.

Why the confusion happens

Part of it is language. "Restricted" sounds almost as severe as "prohibited" in casual conversation, so people round it up mentally to "probably shouldn't use this." That instinct isn't wrong exactly, since restricted ingredients do deserve caution, but it skips the actual work of checking the specific condition attached.

The other part is that both categories exist on the same document, sometimes formatted similarly, so a quick skim can blur which column an ingredient landed in. Someone scanning for a familiar preservative name might see it listed and stop reading right there, missing that it's restricted to 0.5% in rinse-off products only, and their formula is a 2% leave-on cream.

A simplified comparison

Aspect	Prohibited	Restricted
Allowed in any concentration	No	Yes, up to a stated limit
Depends on product type	No, banned everywhere	Often, yes
Label requirement	Not applicable, can't be used	Sometimes requires a warning statement
Compliance path	Remove entirely, reformulate	Confirm concentration and conditions match
Common maker mistake	Assuming a low dose is fine	Not checking the specific condition attached

Working through a restricted ingredient properly

Say you're using an ingredient that the Hotlist restricts to a maximum of 1% in leave-on products. The check isn't "is it on the list, yes or no." It's a short sequence:

1. Confirm the exact concentration in your finished product, accounting for any supplier blends that contribute the ingredient as a component
2. Confirm your product category matches the one the restriction applies to
3. Confirm whether a specific warning statement is required on your label as a condition of use
4. Document that check, since it's the kind of detail worth having on hand if a question ever comes up later

Skipping any one of those steps is how a technically restricted-but-compliant formula turns into a non-compliant one without anyone intending it.

Why this matters at filing time

When you submit a CNF, you're listing ingredients by INCI name with their concentration. A restricted ingredient sitting right at, or worryingly close to, its limit isn't automatically flagged by the notification system the way a prohibited ingredient's presence would be. Notification is not pre-market approval, so the responsibility to have gotten the concentration and conditions right sits with you before you ever click submit.

That's really the whole point of separating the two categories in the first place. Prohibited is a wall. Restricted is a rule you have to follow correctly, and following it starts with knowing your actual concentrations down to the ingredient level, not just recognizing a name on a list.

If you're working through a formula with several restricted ingredients at once, especially ones coming in through supplier blends where the real concentration takes some math to work out, Cosmetic Comply screens each ingredient against the current prohibited and restricted lists and flags anything close to a limit with a confidence score, before a human reviewer confirms it, so nothing restricted slips through labeled as simply "on the list."