Skincare Science

Find the 25 fragrance allergens in your cosmetic ingredient lists

Key Takeaway

Even if a label only says "fragrance", any of the 25 MFDS-listed allergens above the threshold must be named. Note names like linalool or limonene and compare them with products that bothered your skin.

Blank skincare bottles and a cream jar on an oak dresser with a sage runner, beside a glass dish of lemon peel and lavender and a closed notebook

How are fragrance and fragrance allergens shown in an ingredient list?

According to Easy Law, fragrance ingredients added for scent can be grouped as "fragrance" in the full ingredient list. If that fragrance contains allergens, however, each allergen must be named. Annex 2 of the notice sets the level at which this applies.

Product typeExamplesThreshold for naming the ingredient
Rinse-off productsCleansers, shampoo, body washMore than 0.01%
Leave-on productsToners, creams, sunscreen, perfumeMore than 0.001%

The threshold for products left on the skin is ten times lower. That is why the same ingredient may be missing from a cleanser label but listed on a cream. In the August 2026 amendment, only the cited article number in the title of Annex 2 changed; the list of ingredients stayed the same.

What are the 25 ingredients in the notice?

These follow the order of Annex 2 as posted on the National Law Information Center. The numbers in brackets are CAS registry numbers.

No.IngredientNo.Ingredient
1Amyl cinnamal (122-40-7)14Benzyl cinnamate (103-41-3)
2Benzyl alcohol (100-51-6)15Farnesol (4602-84-0)
3Cinnamyl alcohol (104-54-1)16Butylphenyl methylpropional (80-54-6)
4Citral (5392-40-5)17Linalool (78-70-6)
5Eugenol (97-53-0)18Benzyl benzoate (120-51-4)
6Hydroxycitronellal (107-75-5)19Citronellol (106-22-9)
7Isoeugenol (97-54-1)20Hexyl cinnamal (101-86-0)
8Amylcinnamyl alcohol (101-85-9)21Limonene (5989-27-5)
9Benzyl salicylate (118-58-1)22Methyl 2-octynoate (111-12-6)
10Cinnamal (104-55-2)23Alpha-isomethyl ionone (127-51-5)
11Coumarin (91-64-5)24Oakmoss extract (90028-68-5)
12Geraniol (106-24-1)25Treemoss extract (90028-67-4)
13Anise alcohol (105-13-5)

In what order should you check your own products?

Use the box if you still have it, or the back of the container if not, and compare as follows.

  1. Photograph the ingredient list and zoom in on the text.
  2. Search the whole list for each name in the table above. Ingredients at 1% or less and fragrance can appear in any order, so they may not sit right next to "fragrance".
  3. Write the names you find in a phone note together with the product name.
  4. If a product bothered your skin after use, mark the names it shares with your other notes.

Sharing a name across several products does not prove that ingredient is the cause. Showing these notes at a dermatology consultation does make it easier to explain which products you used.

If a name is missing, does that mean the ingredient is absent?

Not necessarily. The rule applies only when content exceeds the threshold, so an ingredient below it can stay inside "fragrance" without being named. For leave-on products that means 0.001% or less, and for rinse-off products 0.01% or less.

If you want to know whether an ingredient is present at all, write down the product name and batch code and ask the responsible seller about that specific ingredient. When you get an answer, add it to your note with the date you checked so you do not need to ask again the next time you buy the same product.

Frequently Asked Questions

Can a product labeled 'unscented' still contain these ingredients?

This notice has no separate standard for the word 'unscented'. Do not rely on the wording alone; check the ingredient list for the 25 names yourself.

How do I check products that only have an English label, such as overseas purchases?

Each ingredient in the notice's list has a CAS number. Match English names by CAS number, for example Linalool (78-70-6), Limonene (5989-27-5) and Citronellol (106-22-9).

Is perfume labeled under the same rule?

Perfume is also a cosmetic and is not rinsed off after use, so read it against the leave-on threshold of more than 0.001%. Look for the 25 names in the ingredient list on the box or bottle.

Sources & Verification Date

  1. National Law Information Center — Regulation on cosmetic use precautions and allergen labeling, Annex 2: Allergens among fragrance components · Verified
  2. Ministry of Food and Drug Safety — Partial amendment to the regulation on cosmetic use precautions and allergen labeling (Notice No. 2026-56) · Verified
  3. Easy Law — Cosmetic labeling standards and methods · Verified

All materials have been verified from official announcements and may have changed since verification.