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KBeauty Verified™ — K-beauty checked against official records from Korea, the EU and the U.S.

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4-(4-Methoxyphenyl)-3-butene-2-one (Anisylidene acetone), when used as a fragrance ingredient

Korean: 4-(4-메톡시페닐)-3-부텐-2-온(4-아니실리덴아세톤) (착향제로 사용될 때) · CAS 943-88-4 ·

KR South Korea (MFDS)

No specific rule on file.

EU European Union (CosIng)

Prohibited Annex II/443

Source: EU CosIng — Annex II · checked Oct 16, 2026

US United States (FDA)

No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.

Other markets

How 4-(4-Methoxyphenyl)-3-butene-2-one (Anisylidene acetone), when used as a fragrance ingredient is treated in 2 more markets, from the overseas cosmetic regulation database compiled by Korea's MFDS. Always confirm with the regulator of that country before selling there.

Market	Status	Conditions
BR Brazil	Prohibited	MFDS summary (Korean): when used as a fragrance ingredient^착향 성분으로 사용될경우에 한함
AR Argentina	Prohibited	MFDS summary (Korean): when used as a fragrance ingredient^착향 성분으로 사용될경우에 한함

Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 16, 2026

Also listed as

4-(4-Methoxyphenyl)-3-butene-2-one (Anisylidene acetone), when used as a fragrance ingredient 4-(4-메톡시페닐)-3-부텐-2-온(4-아니실리덴아세톤) (착향제로 사용될 때)

Information only, not medical advice. Rules change — always check the linked official source. If you are pregnant, have a skin condition or allergies, ask a dermatologist or pharmacist.