Ask KBeauty Verified™

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

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Dequalinium Chloride

Korean: 데퀄리늄클로라이드 · CAS 522-51-0 · Functions: antimicrobial, antiplaque, deodorant, oral care

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.

Also listed as

DEQUALINIUM CHLORIDE 데퀄리늄클로라이드

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 Dequalinium Chloride 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 Dequalinium Chloride banned in South Korea?

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

Is Dequalinium Chloride 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 Dequalinium Chloride used for in cosmetics?

The EU's CosIng inventory lists its functions as: antimicrobial, antiplaque, deodorant, oral care.

What is Dequalinium Chloride called on Korean labels?

Korea's MFDS standard Korean name is 데퀄리늄클로라이드.

What is the CAS number of Dequalinium Chloride?

CAS 522-51-0 (from official records).