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

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Sodium Disulfite

Korean: 소듐다이설파이트 · CAS 7757-74-6 ·

KR South Korea (MFDS)

Restricted MFDS restricted ingredients

Conditions (official MFDS text, Korean):
* 배합한도 : <보존제> ∙ 유리 SO2로 0.2% <기타배합한도> ∙ 산화염모제에서 유리 SO2로 0.67% ∙ 기타 제품에는 사용금지

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

Sodium Disulfite 소듐다이설파이트

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 Sodium Disulfite 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 Sodium Disulfite banned in South Korea?

In Korea's MFDS records it is listed as “Restricted” (MFDS — cosmetic ingredient use restrictions). A restricted ingredient is allowed within the stated conditions.

Is Sodium Disulfite 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 Sodium Disulfite called on Korean labels?

Korea's MFDS standard Korean name is 소듐다이설파이트.

What is the CAS number of Sodium Disulfite?

CAS 7757-74-6 (from official records).