Korean: 옥시퀴놀린설페이트 · CAS 134-31-6 · Functions: antimicrobial, chelating
Restricted MFDS restricted ingredients
Source: MFDS — cosmetic ingredient use restrictions · checked Oct 16, 2026
Prohibited Annex II/395
Conditions: Hydroxy-8-quinoline and its sulphate bis(8-hydroxyquinolinium) sulphate, except for the uses of the sulphate provided for in entry 51 of Annex III
Source: EU CosIng — Annex II · checked Oct 16, 2026
Restricted Annex III/51
Maximum: (a) (0,3 % as base) (b) (0,03 % as base)
Conditions: Product type: (a) Stabilizer for hydrogen peroxide in rinse-off hair products (b) Stabilizer for hydrogen peroxide in leave-on hair products
Source: EU CosIng — Annex III · checked Oct 16, 2026
No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.
How Oxyquinoline Sulfate is treated in 6 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 | Restricted | except for the uses provided in table 3 |
| AS ASEAN (10 countries) | Restricted | MFDS summary (Korean): * 【Restrictions】 Field of application and/or use : (a) Stabilizer for hydrogen peroxide in rinse-off hair care preparations. (b) Stabilizer for hydrogen peroxide in non-rinse-off hair-care preparations. * 제한 【사용 범위】 : (a) 씻어내는 헤어제품에 하이드로젠퍼옥사이드의 안정화제로써 (b)씻어내지 않는 헤어제품에 하이드로젠퍼옥사이드의 안정화제로써 *... |
| TW Taiwan | Restricted | — |
| CA Canada | Restricted | 【Restrictions】 Conditions of Use by product type : (a) As stabilizers for hydrogen peroxide in rinse-off hair products (b) As stabilizers for hydrogen peroxide in leave-on hair products 【Restrictions】 Maximum Concentration Permitted : (a) 0.3% (b) 0.03% |
| BR Brazil | Restricted | except for the uses provided for in No 51 in Annex III |
| AR Argentina | Restricted | except for the uses provided for in No 51 in Annex III |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 16, 2026
OXYQUINOLINE SULFATE 옥시퀴놀린설페이트
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.
In the EU's CosIng records it is listed as “Prohibited” (EU CosIng — Annex II).
In Korea's MFDS records it is listed as “Restricted” (MFDS — cosmetic ingredient use restrictions). A restricted ingredient is allowed within the stated conditions.
We found no specific rule for it in the FDA's records. That is not an approval or a safety statement.
The EU's CosIng inventory lists its functions as: antimicrobial, chelating.
Korea's MFDS standard Korean name is 옥시퀴놀린설페이트.
CAS 134-31-6 (from official records).