Is 3,5,5-Trimethylcyclohex-2-enone (Isophorone) restricted in EU cosmetics?

3,5,5-Trimethylcyclohex-2-enone (Isophorone) is prohibited in EU cosmetics according to EU CosIng Annex II.

Is 3,5,5-Trimethylcyclohex-2-enone (Isophorone) restricted under the ASEAN Cosmetic Directive?

3,5,5-Trimethylcyclohex-2-enone (Isophorone) is prohibited under the ASEAN Cosmetic Directive Annex II.

What is the CAS number for 3,5,5-Trimethylcyclohex-2-enone (Isophorone)?

The CAS number for 3,5,5-Trimethylcyclohex-2-enone (Isophorone) is 78-59-1.

Regulatory data is for reference only. Always verify with the official regulator before making formulation decisions. Last refreshed: 8/29/2026.

Ingredients/3,5,5-Trimethylcyclohex-2-enone (Isophorone)

3,5,5-Trimethylcyclohex-2-enone (Isophorone)CAS 78-59-1

EU CosIng II — prohibitedASEAN II — prohibited

Regulatory status

Source	Status	Annex / Details	Limit / Conditions	Last updated
EU CosIng	prohibited	Annex II		—
ASEAN	prohibited	Annex II	—	—

What this means

3,5,5-Trimethylcyclohex-2-enone (Isophorone) has regulatory signals in EU CosIng, ASEAN. Review the source links above for the official conditions and latest updates.

Common questions

Is 3,5,5-Trimethylcyclohex-2-enone (Isophorone) restricted in EU cosmetics?: 3,5,5-Trimethylcyclohex-2-enone (Isophorone) is prohibited in EU cosmetics according to EU CosIng Annex II.
Is 3,5,5-Trimethylcyclohex-2-enone (Isophorone) restricted under the ASEAN Cosmetic Directive?: 3,5,5-Trimethylcyclohex-2-enone (Isophorone) is prohibited under the ASEAN Cosmetic Directive Annex II.
What is the CAS number for 3,5,5-Trimethylcyclohex-2-enone (Isophorone)?: The CAS number for 3,5,5-Trimethylcyclohex-2-enone (Isophorone) is 78-59-1.

3,5,5-Trimethylcyclohex-2-enone (Isophorone)CAS 78-59-1

Regulatory status

What this means

Common questions

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