Hypoallergenic Has No Legal Definition, Now What

Somebody asks you to put "hypoallergenic" on their custom lotion label, and your first instinct might be to check what threshold you need to hit. There isn't one. The word has no fixed legal definition telling you exactly what a product must do or contain to earn it. That doesn't make it a free word you can print without thought, it makes it a claim you need to be able to defend on your own terms.

What the word implies even without a definition

Even without a regulatory threshold, "hypoallergenic" carries a plain meaning to a shopper: this product is less likely to cause an allergic reaction than a typical comparable product. That implied promise is what you're on the hook for if anyone, a regulator, a competitor, or a customer's lawyer, ever asks you to back it up. The absence of a legal definition doesn't remove the expectation that the claim is truthful and substantiated, it just means there's no single checklist for you to follow.

What actually supports the claim

Since there's no fixed formula, substantiation is about building a reasonable, documented case:

• Minimize or exclude common allergens. Fragrance allergens like Limonene, Linalool, Citronellol, Geraniol, Eugenol, and Coumarin are common triggers, and many of them occur naturally in essential oils. A formula that's genuinely lower in these, or fragrance-free entirely, has a more defensible basis for the claim than one packed with essential oil blends.
• Test the formula, not just the concept. Patch testing or a dermatologist-reviewed formula gives you something concrete to point to, rather than a marketing assumption.
• Keep formula records current. If you reformulate and swap in a new fragrance or botanical extract, your substantiation needs to be revisited, since the claim was tied to the old formula, not the brand name.
• Avoid stacking unprovable claims on top of it. "Hypoallergenic" next to "100 percent allergy-proof" is a problem, since the second claim overstates what any formula can honestly promise. No product can guarantee zero allergic reactions across every possible person.

A claim, not a category

It helps to think of "hypoallergenic" as sitting next to other soft, marketing-adjacent claims rather than as its own regulated category, similar in flavor to how "natural" carries no fixed definition either. Both terms describe consumer perception more than they describe a checked regulatory box, and both need you to have your own reasonable, honest basis for using them.

How this interacts with allergen labeling

Making a hypoallergenic claim doesn't exempt you from allergen disclosure requirements. In Canada, fragrance allergens above set thresholds, 0.001 percent in leave-on products and 0.01 percent in rinse-off products, still need disclosure on the Cosmetic Notification Form and label regardless of what marketing claim sits elsewhere on the package. If anything, a hypoallergenic claim next to a full allergen disclosure list can look inconsistent to a sharp-eyed customer, so it's worth thinking through how the claim and the disclosure sit together on the same label.

A quick self-check before printing the word

Question	If Yes	If No
Have I minimized or documented common allergens in this formula?	Reasonable basis exists	Reconsider the claim
Do I have any testing or dermatological review on file?	Stronger substantiation	Consider getting some before claiming
Am I also disclosing allergens present per the required thresholds?	Consistent labeling	Fix the mismatch first
Am I pairing this with an absolute claim like "allergy-proof"?	Remove the absolute claim	Fine as is

The bottom line for your label

You can use "hypoallergenic," it's not off-limits, but treat it as a claim you're personally vouching for rather than a certification you're borrowing. Keep your reasoning on file, keep it tied to your actual current formula, and don't let it drift out of sync with what's really in the bottle.

Since claim standards and enforcement expectations can vary and evolve, checking your specific market's current guidance before finalizing label language is worth the ten minutes. If you're already mapping your formula's ingredients for a filing, Cosmetic Comply's ingredient screening naturally surfaces the fragrance and allergen details that back up, or undercut, a hypoallergenic claim.