Korean: CI 21108 · CAS 5567-15-7 · Functions: colorant
No specific rule on file.
Approved colorant Annex IV/48
Conditions: Rinse-off products
Required label warning: Maximum 3,3'-dimethylbenzidine concentration in the colouring agent: 5 ppm
Source: EU CosIng — Annex IV · checked Oct 16, 2026
No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.
How CI 21108 is treated in 5 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 | MFDS summary (Korean): * 기타 제한조건 및 요구사항 : 이 착색제 중의 3,3'- 디메틸벤지딘의 최대농도 : 5mg/kg * 착색제 【사용허가 범위】 : 피부와 잠시 접촉하는 화장품 전용 |
| AS ASEAN (10 countries) | Restricted | MFDS summary (Korean): * Field of application : Colouring agents allowed exclusively in cosmetic products intended to come into contact only briefly with the skin. * 적용 범위 : 피부에 단시간 접촉하는 제품에서 허용된 착색제 * Other limitations and requirements : Maximum 3,3’-dimethylbenzidine concentration in the colouring agent: 5 ppm *... |
| 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.... |
| BR Brazil | Restricted | MFDS summary (Korean): * Restrictions 【Field of application and/or use】 : Dye Substances allowed exclusively in products that have short time of skin and hair contact. * 제한 【사용 범위】 : 피부나 머리에 장시간 닿지 않는 제품에 한해서만 허용된 염색 성분 * Restrictions 【Other limitations and requirements】 : Maximum dimethylbenzidine concentration:... |
| AR Argentina | Restricted | MFDS summary (Korean): * Restrictions 【Field of application and/or use】 : Dye Substances allowed exclusively in products that have short time of skin and hair contact. * 제한 【사용 범위】 : 피부나 머리에 장시간 닿지 않는 제품에 한해서만 허용된 염색 성분 * Restrictions 【Other limitations and requirements】 : Maximum dimethylbenzidine concentration:... |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 16, 2026
CI 21108
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.