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

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[1,1'-biphenyl-4,4'-diyl]diammonium sulfate

Korean: [1,1'-비페닐-4,4'-다일]다이암모늄설페이트 · CAS 531-86-2 ·

KR South Korea (MFDS)

Prohibited MFDS prohibited ingredients

Source: MFDS — cosmetic ingredient use restrictions · checked Oct 17, 2026

EU European Union (CosIng)

No specific rule on file.

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 [1,1'-biphenyl-4,4'-diyl]diammonium sulfate is treated in 4 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
CN China	Prohibited	—
AS ASEAN (10 countries)	Prohibited	—
BR Brazil	Prohibited	—
AR Argentina	Prohibited	—

Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 17, 2026

Also listed as

[1,1'-biphenyl-4,4'-diyl]diammonium sulfate [1,1'-비페닐-4,4'-다일]다이암모늄설페이트

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.

Frequently asked questions

Is [1,1'-biphenyl-4,4'-diyl]diammonium sulfate banned in the European Union?

We found no specific rule for it in the EU's CosIng records. That is not an approval or a safety statement.

Is [1,1'-biphenyl-4,4'-diyl]diammonium sulfate banned in South Korea?

In Korea's MFDS records it is listed as “Prohibited” (MFDS — cosmetic ingredient use restrictions).

Is [1,1'-biphenyl-4,4'-diyl]diammonium sulfate allowed in cosmetics in the U.S.?

We found no specific rule for it in the FDA's records. That is not an approval or a safety statement.

What is [1,1'-biphenyl-4,4'-diyl]diammonium sulfate called on Korean labels?

Korea's MFDS standard Korean name is [1,1'-비페닐-4,4'-다일]다이암모늄설페이트.

What is the CAS number of [1,1'-biphenyl-4,4'-diyl]diammonium sulfate?

CAS 531-86-2 (from official records).