Fragrance Allergens4 min read
Rose Oil and Rose Absolute: The Allergens to Expect
How geraniol, citronellol, and eugenol show up differently in rose otto versus rose absolute, and what that means for allergen disclosure.
April 23, 2026Read
Fragrance Allergens
Disclosure lists, the 2026 rollout dates, and what shows up on your label.
Fragrance Allergens4 min read
Benzyl Alcohol as a Fragrance Allergen and Preservative
Benzyl alcohol does double duty as scent note and preservative, and that overlap changes how you declare it on a label.
April 22, 2026Read
Fragrance Allergens4 min read
Limonene on Your Label: What This Allergen Means
Limonene is the citrus-oil allergen that oxidizes over time, which changes how you should think about testing and shelf life.
April 21, 2026Read
Fragrance Allergens4 min read
What New Allergens List 2 Adds in August 2026
List 2 expands Canada's fragrance allergen disclosure past List 1, and knowing exactly what's new saves you a second relabeling pass.
April 21, 2026Read
Fragrance Allergens4 min read
Essential Oil to Allergen Cheat Sheet for Makers
A quick-reference pairing of popular essential oils with the declarable allergens they typically carry, for faster formula checks.
April 20, 2026Read
Fragrance Allergens3 min read
Citronellol: Rose and Geranium Allergen Disclosure
Where citronellol comes from, why it shows up in so many florals, and the exact concentration where disclosure becomes mandatory.
April 17, 2026Read
Fragrance Allergens4 min read
Cinnamon and Clove Oils Carry the Strong Allergens
Cinnamon bark and clove oil are among the most sensitizing fragrance materials, driven by high cinnamal and eugenol content.
April 15, 2026Read
Fragrance Allergens3 min read
The Allergen Reality for All Natural Essential Oil Brands
Why brands using only essential oils still trigger Canada's fragrance allergen disclosure rules, and how to check your blends before the 2026 deadlines.
April 8, 2026Read
Fragrance Allergens3 min read
Hydroxycitronellal: A Muguet Allergen to Watch
What hydroxycitronellal is, why it turns up in lily-of-the-valley and floral fragrance accords, and how its disclosure works in Canada.
April 7, 2026Read
Fragrance Allergens4 min read
Calculating Allergens When You Blend Multiple Oils
Three essential oils in one formula can each add a little linalool, and Health Canada wants the summed total, not three separate small numbers.
April 4, 2026Read
Fragrance Allergens3 min read
Isoeugenol on the Label and Why It Is Restricted
Isoeugenol is one of the more potent fragrance sensitizers, which is why it gets tighter limits and closer disclosure attention.
March 27, 2026Read
Fragrance Allergens4 min read
Leave-On vs Rinse-Off: Which Allergen Threshold Applies
Why the same fragrance dose can trip Canada's allergen disclosure threshold in a lotion but stay under it in a shampoo.
March 27, 2026Read
Fragrance Allergens4 min read
Natural Extract Allergens Like Prunus and Related Notes
Covers the botanical-extract allergen entries in Canada's expanded List 2 that catch makers used to thinking only in single molecules.
March 23, 2026Read
Fragrance Allergens4 min read
What Actually Counts as a Declarable Fragrance Allergen
Clarifies the line between a fragrance ingredient and a declarable allergen so Canadian makers stop over- or under-declaring on labels.
March 23, 2026Read
Fragrance Allergens4 min read
Natural Fragrance Still Carries Declarable Allergens
Limonene, Linalool, and Geraniol occur naturally in essential oils and trigger the same Canada disclosure thresholds as synthetic fragrance.
March 22, 2026Read
Fragrance Allergens4 min read
CAS Numbers for the Most Common Fragrance Allergens
A quick-reference table pairing the frequent Canada-listed fragrance allergens with their CAS numbers to match supplier data accurately.
March 21, 2026Read
Fragrance Allergens4 min read
A Small Batch Maker's Workflow for Allergen Labeling
A repeatable, low-overhead process for indie makers to catch fragrance allergens and get them onto labels correctly, no regulatory team required.
March 18, 2026Read
Fragrance Allergens4 min read
The 0.001 Percent Leave-On Allergen Trigger Explained
What 0.001 percent actually means for leave-on products under Canada's fragrance allergen rules, and why that threshold catches more formulas than makers expect.
March 17, 2026Read
Fragrance Allergens4 min read
Benzyl Benzoate and Benzyl Salicylate on Your Label
How benzyl benzoate and benzyl salicylate show up together in balsamic and floral fragrances, and what that means for Canada's allergen disclosure.
March 13, 2026Read
Fragrance Allergens4 min read
Citral: The Lemon Note That Must Be Declared
Where citral hides in lemongrass and lemon myrtle oils, why it degrades into other sensitizers, and when Canada requires it on your label.
March 13, 2026Read
Fragrance Allergens4 min read
How Fragrance Allergens Fit the Canada CNF Notification
Where fragrance allergen disclosure actually shows up on Canada's Cosmetic Notification Form, and how the two 2026 deadlines change what you file.
February 26, 2026Read
Fragrance Allergens4 min read
The Full List 1 Fragrance Allergen Breakdown
A reference list of the List 1 fragrance allergens becoming mandatory on Canadian CNFs and labels April 12, 2026, with disclosure thresholds.
February 23, 2026Read
Fragrance Allergens4 min read
Coumarin on Labels: Tonka, Vanilla, and Disclosure
Coumarin's warm, sweet fragrance sources like tonka bean, and why it needs allergen disclosure separate from any unrelated ingestion concerns.
February 22, 2026Read
Fragrance Allergens4 min read
Cinnamal and Cinnamyl Alcohol: The Cinnamon Allergens
Cinnamal and cinnamyl alcohol are two of the most reactive fragrance allergens, and cinnamon-scented products often contain both without makers realizing it.
February 18, 2026Read