Korean: 적색225호 · Functions: colorant
Restricted MFDS restricted ingredients
Conditions (official MFDS text, Korean):
* 배합한도 : 눈 주위 및 입술에 사용할 수 없음
Source: MFDS — cosmetic ingredient use restrictions · checked Oct 17, 2026
prohibited_conditional Annex II/1353
Conditions: 1-((4-Phenylazo)phenylazo)-2-naphthol (Solvent Red 23; CI 26100) when used as a substance in hair dye products
Source: EU CosIng — Annex II · checked Oct 17, 2026
Approved colorant Annex IV/51
Conditions: Not to be used in products applied on mucous membranes
Required label warning: Purity criteria: anilin
Source: EU CosIng — Annex IV · checked Oct 17, 2026
No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.
How CI 26100 is treated in 7 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 | — |
| AS ASEAN (10 countries) | Restricted | MFDS summary (Korean): * Field of application : Colouring agents allowed exclusively in cosmetic products intended not to come into contact with the mucous membranes * 적용 범위 : 점막에 사용되지 않는 제품에서 허용된 착색제 * Other limitations and requirements : Purity criteria: aniline 0.2% 2-naphtol 0.2% 4-aminoazobenzene 0.1%... |
| JP Japan | Restricted | MFDS summary (Korean): * 【제품 타입 또는 목적 (types or intended purposes of cosmetics)】 : 외용의약품, 외용의약부외품, 화장품에 사용 할 수 있는 색소 |
| TW Taiwan | Restricted | MFDS summary (Korean): 1. 所列色素與非禁用成分形成之麗基（lakes）及鹽（salts）亦可使用。 2. 未列載於此表規定範圍之成分，於歐盟、美國及日本三國家地區，任何其中一個國家地區官方已公告（以生效日為準）其使用基準者，得參照其基準規定准予使用(但下表CI 11380 等十九項成分不適用)，惟於申請查驗登記時，應同時檢附該等地區之准許使用基準證明文件。 * 단서조항 : 1. 所列色素與非禁用成分形成之麗基（lakes）及鹽（salts）亦可使用。 2.... |
| CA Canada | Restricted | 【Restrictions】 Conditions of Use by product type : (a) Not permitted in cosmetics intended to be used on or around mucosal membranes such as eyes, nose or mouth. Additionally see "Coal tar dye". (b) Hair dye product c) Other cosmetics 【Restrictions】 Warnings and Cautionary Statements: (to the effect of) : (b) “Do not use to dye eyelashes or eyebrows.” “Do not use in or around the area of the... |
| BR Brazil | Restricted | MFDS summary (Korean): when used as a substance in hair dye products^염모제로 사용되는 경우에 한함 |
| AR Argentina | Restricted | MFDS summary (Korean): when used as a substance in hair dye products^염모제로 사용되는 경우에 한함 |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 17, 2026
CI 26100 Sudan III
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 “Approved colorant” (EU CosIng — Annex IV). It is allowed for that use within the stated conditions.
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: colorant.
Korea's MFDS standard Korean name is 적색225호.
1 products we checked list it, for example Nature Republic COLOR & NATURE NAIL CARE BASE COAT (w/TOP COAT).