Scented Soap and the New Fragrance Allergen Disclosure

Lavender soap is the example everyone reaches for, and it's a good one, because lavender essential oil naturally contains linalool and linalyl acetate, both of which sit on the allergen lists Health Canada is about to make mandatory. If you've been writing "fragrance" or "parfum" as one tidy line on your soap label, that's changing, and it's changing on a real timeline you can plan around.

The two-date rollout

Canada isn't flipping this on all at once. List 1, the original fragrance allergen set, becomes mandatory on the Cosmetic Notification Form and the label on April 12, 2026. List 2, an expanded set aligned with international allergen lists, follows on August 1, 2026. If you're notifying a new scented soap this year, you need to know which list applies to your filing date, and if you're already selling, you'll need to amend before each deadline hits.

Why soap isn't automatically exempt

Here's the wrinkle a lot of soap makers miss: true soap, meaning an alkali salt of fatty acids sold with only a cleansing claim, can be treated differently from a standard cosmetic. But the second you say "moisturizing," "gentle on sensitive skin," or "softens," you've made a cosmetic claim, and your bar is a cosmetic under the Food and Drugs Act and Cosmetic Regulations. Most bar soap on the market today carries at least one of these claims, which means most scented soap sold in Canada is squarely inside CNF territory, allergen disclosure included.

Where the allergens actually come from

Essential oils are natural mixtures, not single compounds, and several common allergens show up across dozens of oils used in soap making:

Allergen	Common essential oil sources	Typical role
Limonene	Citrus oils (orange, lemon, bergamot)	Fragrance component, also a solvent
Linalool	Lavender, bergamot, coriander	Fragrance component
Citronellol	Rose, geranium, citronella	Fragrance component
Geraniol	Geranium, rose, palmarosa	Fragrance component
Eugenol	Clove, cinnamon leaf	Fragrance component
Coumarin	Tonka bean, cassia, some lavender	Fragrance component

None of these were added on purpose in most handmade soap. They're just naturally occurring constituents of the essential oil blend you already use, which is exactly why so many small soap makers are caught off guard. Nobody added citronellol to your rose geranium soap, it's just part of what rose geranium oil is.

The concentration thresholds that decide disclosure

Disclosure isn't triggered by using the essential oil at all, it's triggered by the concentration of the specific allergen constituent in the finished product. The thresholds:

• Above 0.001% (10 ppm) in leave-on products
• Above 0.01% (100 ppm) in rinse-off products

Soap is rinse-off, so you get the higher, more forgiving threshold. But essential oils are potent, and it doesn't take much lavender oil in a bar to push linalool past 100 ppm once you do the math on your usage rate. You need the actual GC/MS or supplier-provided allergen breakdown of your essential oil to know your real numbers, not a guess.

What this means for your ingredient list

Once an allergen crosses the threshold, it needs its own line by INCI name, both on the CNF and on the label, separate from the generic "parfum" or essential oil blend name. If you're using a supplier's proprietary fragrance blend, the supplier should be able to give you the allergen breakdown, since you can't disclose what you can't see. If they won't share it, that's worth treating as a red flag on the relationship, not just a compliance gap.

Practical steps before the deadlines

Start by pulling the allergen data sheet for every essential oil and fragrance blend in your current soap lineup. Calculate the actual ppm for each allergen constituent at your usage rate, not the oil's total percentage. Then plan two waves: one amendment to your CNF and labels ahead of April 12, 2026 for List 1 substances, and a second ahead of August 1, 2026 for the expanded List 2 set. Doing both at once might feel efficient, but List 2's exact substance roster is worth confirming closer to the date directly with Health Canada, since expanded lists sometimes get refined before they land.

If you're staring down a soap lineup with a dozen scents and trying to work out which ones cross which threshold, that's exactly the kind of ingredient math Cosmetic Comply automates, matching your essential oils to their INCI names and running the concentration checks so you're not doing it by hand on a spreadsheet at midnight.