You Sell Bulk Cosmetic Base to Another Brand: Who Notifies

A contract manufacturer client of mine spent a full afternoon convinced she needed to file a CNF for every private label brand she supplies bulk lotion base to. She does not, in most of the arrangements she actually has, and untangling why took longer than it should have because the answer depends entirely on who is doing what to that base before it reaches a shelf.

The CNF duty follows first sale in Canada, not manufacturing

The Cosmetic Notification Form exists to notify Health Canada that a cosmetic is being sold in Canada, and the obligation is generally tied to whoever is selling the finished cosmetic, due within 10 days of first sale. If you manufacture a bulk base and hand it off to another company that finishes it (adding fragrance, packaging it, branding it, sometimes adjusting the formula) and that second company is the one putting a finished, labeled product into Canadian commerce, the notification duty typically sits with them, not with you as the bulk supplier.

That said, "typically" is doing real work in that sentence, because the actual arrangement between the two companies determines this, and it is worth spelling out explicitly in your supply contract rather than assuming it by default.

Where it gets less clean

A few situations blur this line and deserve a direct answer before you sign a supply agreement, not after:

• You sell a finished, ready-to-label product and the buyer just slaps their own branding on it. If your base is already the complete formula with nothing more than a private label applied, the line between "bulk supplier" and "the company actually selling the cosmetic" gets thinner. Some arrangements in this shape still put the notification duty on the brand doing the selling, but the underlying formula information has to come from somewhere, and that somewhere is you.
• You are the one who actually exports or imports the product into Canada. If you are shipping directly to Canadian retail or filling Canadian orders yourself under your own operation even though another brand's name is on the label, you may be closer to the seller of record than a pure upstream supplier.
• Multiple private label brands, one base formula. If you supply the same bulk base to five different brands who each add their own fragrance and packaging, each of those five finished products is arguably a distinct cosmetic for CNF purposes, and each brand needs to handle notification for their own finished version, even though the base formula they started from is identical.

What the bulk supplier should still do, regardless

Even when the notification duty legally sits with your customer, you are not off the hook for good practice. Supply your customers with a complete, accurate INCI breakdown of the base formula, including concentrations or concentration ranges, so they can actually build a correct CNF. If you cannot tell them what is in your own base at the INCI and percentage level, you have handed them a compliance problem disguised as a raw material.

It is also worth putting in writing, in your supply agreement, who is responsible for CNF filing on the finished product. Verbal assumptions about "obviously you'll handle that" have a way of surfacing as disputes only after Health Canada asks a question neither party is prepared to answer.

A simple framework

Scenario	Who typically notifies
You supply bulk base; buyer adds fragrance, packages, brands, and sells	The buyer/brand selling the finished cosmetic
You supply a fully finished formula; buyer only applies private label	Usually the brand, but confirm contractually; your formula data still has to support their filing
You ship the finished product into Canada yourself under another brand's name	Likely you, since you are closer to the actual seller of record in Canada
Multiple brands use the same base with different add-ins	Each brand notifies separately for their finished version

The practical takeaway

Do not let "who files the CNF" be an assumption. Put it in the contract, and make sure whoever ends up filing has an accurate INCI and concentration breakdown to work from, not a marketing sheet with trade names on it.

If you are the brand on the receiving end of a bulk base and need to turn a supplier's formula sheet into an actual filed CNF, that handoff, from supplier documentation to a matched, screened, filed notification, is exactly the gap Cosmetic Comply is built to close.