Cosmetic ingredient dictionary
Tetramethyl Acetyloctahydronaphthalenes in cosmetics: what it is and what it does
Tetramethyl Acetyloctahydronaphthalenes is a cosmetic ingredient that keeps the skin in good condition. It is one of the fragrance allergens EU labels name above set levels on new products since 31 July 2026. Open Beauty Facts finds it in 436 products, most often deodorants.
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What does Tetramethyl Acetyloctahydronaphthalenes do in a product?
In a cosmetic product, Tetramethyl Acetyloctahydronaphthalenes keeps the skin in good condition, adds scent and hides an unwanted smell or taste. The EU’s CosIng database lists these jobs for it: skin conditioning, perfuming and masking.
What other names and numbers does Tetramethyl Acetyloctahydronaphthalenes have?
- CAS number
- 54464-57-2, 54464-59-4, 68155-66-8, 68155-67-9
- EC number
- 259-174-3, 259-175-9, 268-978-3, 268-979-9, 915-730-3
- CosIng reference
- 40504
Is Tetramethyl Acetyloctahydronaphthalenes a fragrance allergen?
Yes. Tetramethyl Acetyloctahydronaphthalenes is one of the fragrance allergens the EU added in 2023 (Regulation (EU) 2023/1545). Since 31 July 2026, a new product placed on the EU market must name it when there is more than 0.001% in a product left on the skin, or more than 0.01% in one that is rinsed off. Products already on sale may stay on shelves until 31 July 2028, so an older label may not name it yet.
Who should look out for Tetramethyl Acetyloctahydronaphthalenes?
Which products contain Tetramethyl Acetyloctahydronaphthalenes?
Open Beauty Facts finds Tetramethyl Acetyloctahydronaphthalenes in the ingredient lists of 436 of the 22,021 products it has a list for, most often deodorants, bath and shower and shower gels.
Products with it, by country of sale: Germany 195 · France 54 · Turkey 33 · United Kingdom 21.
Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Tetramethyl Acetyloctahydronaphthalenes turns up, not how much of the market it is.
Bravoora reads this ingredient for everyone you shop for: an allergy or intolerance, a vegan or vegetarian diet, a calorie or protein goal, and the labels on supplements and skincare too. Build a profile · For dermatologists, dietitians and doctors
Sources
The job, the description and the EU annex entry are CosIng’s; the fragrance allergens are the EU Annex III names Bravoora’s label checker reads; the product counts are Open Beauty Facts’.
- European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
- Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL
- EU Regulation 1223/2009 on cosmetic products (the annexes)
- EU Regulation 2023/1545 (fragrance allergen labelling)
Contains information from Open Beauty Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check
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