One CNF Per Product or One Per Line: Which Applies

Someone launching six lipstick shades from the same base often assumes they need six separate filings, or the opposite, that one filing covers the whole line because it's "one product with options." Both assumptions cause problems. The actual answer depends on what's different between the versions, not on how you market them.

The test that actually matters

Health Canada's CNF asks for the ingredients in a cosmetic and their concentrations. If two products have the exact same ingredient list at the exact same concentrations, and the only difference is which pigment blend was used to hit a particular shade, you're often looking at products that can reasonably be grouped, because pigments are themselves ingredients that show up on the notification. The practical question becomes whether the pigment change is the only variable, or whether other things shifted along with it.

Where it gets more complicated:

• Different pigments at different concentrations. A pale pink shade using 0.3% of a colorant and a deep red shade using 1.2% of the same colorant, plus a second colorant the pale shade doesn't have at all, are genuinely different formulas. Each needs its ingredient list and concentrations reflected accurately.
• A shared base with variable colorant loading. This is the most common real-world case. The base cream is identical across ten shades, only the colorant package changes. Many makers file each shade as its own notification because the CNS is built around a specific product's full ingredient declaration, but check current guidance on how variants are meant to be represented, since practice here can be more nuanced than a blanket rule.
• Scent variants. A lotion sold in "Lavender" and "Unscented" isn't a labeling choice, it's a different formula. The Lavender version carries a fragrance and, depending on concentration, may carry declarable allergens the unscented version doesn't have at all.

Why grouping incorrectly is worse than over-filing

If you assume ten shades can hide under one CNF because they're marketed as "the Blush Collection," and a shade with a colorant that's actually restricted or requires disclosure goes unreported, that's a gap that shows up during any review of your notifications. Over-filing, by contrast, mostly costs you time. When in doubt, the safer default is to notify each formula variant as its own entry and let the concentration ranges do the work of covering minor batch-to-batch drift.

What amendments are for, versus new filings

Don't confuse a shade lineup question with an amendment question. An amendment applies when a formula you've already notified changes, say you reformulate an existing shade to remove a colorant. A brand-new shade with a different ingredient list is a new notification, not an amendment to an old one. If you discontinue a shade entirely, that's a discontinuation filing on the old CN number, separate again from whatever you do with the remaining shades in the line.

A simple table to sort your own line

Scenario	Typical treatment
Identical base, only pigment blend differs by shade	Evaluate each shade's actual ingredient/concentration profile; file per variant when concentrations differ
Identical formula, repackaged in a new size	Usually one CNF covers all sizes of the same formula
Same base, one variant scented and one unscented	Separate filings, since fragrance and any allergens differ
Reformulated shade replacing a discontinued one	New notification, plus a discontinuation on the old CN number
Limited-edition shade using the standard base	Treat like any other shade, file based on its actual ingredient profile

Practical advice for a growing line

Keep a spreadsheet mapping every SKU to its CN number rather than relying on memory once you're past four or five shades. It's remarkably easy to lose track of which shade got filed under which number after a year of small tweaks, and that spreadsheet becomes your first line of defense if you ever need to prove a specific shade was notified before it went on shelves.

If you're scaling a shade range and don't want to redo the whole submission from scratch for every new colorant combination, Cosmetic Comply lets you duplicate a past filing for a minor variant, so a new shade that shares 90% of its formula with an already-notified one doesn't mean starting over. It still checks the changed ingredients against the Hotlist independently, which is exactly the discipline this kind of line management needs.