Ask KBeauty Verified™

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

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Hydroxylammonium hydrogensulfate; hydroxylamine sulfate(1:1) [1]; Hydroxylamine phosphate [2]; Hydroxylamine dihydrogenphosphate [3]; Hydroxylamine 4-methylbenzenesulfonate [4]

Korean: 하이드록실암모늄하이드로젠설페이트; 하이드록실아민설페이트(1:1) [1]; 하이드록실아민포스페이트 [2]; 하이드록실아민다이하이드로젠포스페이트 [3]; 하이드록실아민4-메틸벤젠설포네이트 [4] · CAS 10046-00-1 [1] 20845-01-6 [2] 19098-16-9 [3] 53933-48-5 [4] ·

KR South Korea (MFDS)

No specific rule on file.

EU European Union (CosIng)

Prohibited Annex II/1509

Source: EU CosIng — Annex II · checked Oct 17, 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 Hydroxylammonium hydrogensulfate; hydroxylamine sulfate(1:1) [1]; Hydroxylamine phosphate [2]; Hydroxylamine dihydrogenphosphate [3]; Hydroxylamine 4-methylbenzenesulfonate [4] is treated in 1 more market, 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
AS ASEAN (10 countries)	Prohibited	—

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

Also listed as

Hydroxylammonium hydrogensulfate; hydroxylamine sulfate(1:1) [1]; Hydroxylamine phosphate [2]; Hydroxylamine dihydrogenphosphate [3]; Hydroxylamine 4-methylbenzenesulfonate [4] 하이드록실암모늄하이드로젠설페이트; 하이드록실아민설페이트(1:1) [1]; 하이드록실아민포스페이트 [2]; 하이드록실아민다이하이드로젠포스페이트 [3]; 하이드록실아민4-메틸벤젠설포네이트 [4]

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 Hydroxylammonium hydrogensulfate; hydroxylamine sulfate(1:1) [1]; Hydroxylamine phosphate [2]; Hydroxylamine dihydrogenphosphate [3]; Hydroxylamine 4-methylbenzenesulfonate [4] banned in the European Union?

In the EU's CosIng records it is listed as “Prohibited” (EU CosIng — Annex II).

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

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

What is Hydroxylammonium hydrogensulfate; hydroxylamine sulfate(1:1) [1]; Hydroxylamine phosphate [2]; Hydroxylamine dihydrogenphosphate [3]; Hydroxylamine 4-methylbenzenesulfonate [4] called on Korean labels?

Korea's MFDS standard Korean name is 하이드록실암모늄하이드로젠설페이트; 하이드록실아민설페이트(1:1) [1]; 하이드록실아민포스페이트 [2]; 하이드록실아민다이하이드로젠포스페이트 [3]; 하이드록실아민4-메틸벤젠설포네이트 [4].

What is the CAS number of Hydroxylammonium hydrogensulfate; hydroxylamine sulfate(1:1) [1]; Hydroxylamine phosphate [2]; Hydroxylamine dihydrogenphosphate [3]; Hydroxylamine 4-methylbenzenesulfonate [4]?

CAS 10046-00-1 [1] 20845-01-6 [2] 19098-16-9 [3] 53933-48-5 [4] (from official records).