INCI Names & CAS Numbers4 min read
Essential Oil INCI Versus Its Individual Constituents
Declaring lavender oil as one line item works until an allergen constituent inside it needs its own separate disclosure.
July 7, 2026Read
Tagged limonene
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
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 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
Soap & Handmade4 min read
Why Linalool and Limonene Keep Showing Up on Soap Labels
Linalool and limonene are the two allergens most soap makers hit first. Here is how Canada's disclosure thresholds actually work.
February 20, 2026Read
Fragrance Allergens4 min read
Citrus Oil Allergens Beyond Just Limonene
Orange, lemon, and bergamot oils carry more than limonene. Here is the fuller allergen picture makers need for accurate disclosure.
February 1, 2026Read
Fragrance Allergens4 min read
Where Fragrance Allergens Hide Inside Essential Oils
A practical map of common essential oils to the fragrance allergens they naturally carry, so you know what to check before testing.
January 30, 2026Read
Concentration Limits4 min read
Limonene Levels, Oxidation, and When It Must Be Declared
How limonene sneaks into citrus-scented formulas through essential oils, why it oxidizes over time, and the concentration that triggers label disclosure.
January 4, 2026Read