Korean: 산성등색3호 · CAS 6373-74-6 · Functions: hair dyeing
Prohibited MFDS prohibited ingredients
Source: MFDS — cosmetic ingredient use restrictions · checked Oct 17, 2026
Prohibited only in certain forms or uses Annex II/1280
Conditions: Benzenesulfonic acid, 5-[(2,4-dinitrophenyl]amino]-2-(phenylamino)-, and its salts, when used as a substance in hair dye products
Source: EU CosIng — Annex II · checked Oct 17, 2026
No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.
How Acid Orange 3 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 |
|---|---|---|
| TW Taiwan | Prohibited | — |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 17, 2026
ACID ORANGE 3 산성등색3호
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 only in certain forms or uses” (EU CosIng — Annex II). It is not a general ban — the condition reads: “Benzenesulfonic acid, 5-[(2,4-dinitrophenyl]amino]-2-(phenylamino)-, and its salts, when used as a substance in hair dye products”
In Korea's MFDS records it is listed as “Prohibited” (MFDS — cosmetic ingredient use restrictions).
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: hair dyeing.
Korea's MFDS standard Korean name is 산성등색3호.
CAS 6373-74-6 (from official records).