Korean: 적색40호 · CAS 25956-17-6 · Functions: colorant, hair dyeing
Restricted MFDS restricted ingredients
Source: MFDS — cosmetic ingredient use restrictions · checked Oct 17, 2026
Restricted Annex III/191
Maximum: 0.4%
Conditions: Product type: Hair dye substance in non-oxidative hair dye products
Source: EU CosIng — Annex III · checked Oct 17, 2026
Approved colorant Annex IV/32
Conditions: Disodium 6-hydroxy-5-[(2-methoxy-4-sulphonato-m-tolyl)azo]naphthalene-2-sulphonate
Required label warning: Purity criteria as set out in Commission Directive 95/45/EC (E 129)
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 16035 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 : 6-히드록시-2-나프탈렌 술포산, 나트륨염은 0.3%를 초과하지 않음. 4-아미노-5-메톡시-2-메틸벤젠 술포산은 0.2%를 초 과하지 않음 6,6'-옥시디(2-나프탈렌 술포산)디소디움염은 1.0% 를 초과하지 않음 unsulfonated primary aromatic amines은 0.01%를 초과하지 않음 * 착색제 【사용허가 범위】 : 각종 화장품 |
| AS ASEAN (10 countries) | Restricted | MFDS summary (Korean): (15) The free base and salts of this hair colouring ingredient, unless prohibited under Annex II, are permitted for use. * 단서조항(주석) : (15) The free base and salts of this hair colouring ingredient, unless prohibited under Annex II, are permitted for use. Annex II의 금지된 염모제의 염이나 자유 염기가 아니라면,... |
| 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 for all kinds of products. * 제한 【사용 범위】 : 모든 종류의 제품에서 허용된 염색 성분 |
| AR Argentina | Restricted | MFDS summary (Korean): * Restrictions 【Field of application and/or use】 : Dye Substances allowed for all kinds of products. * 제한 【사용 범위】 : 모든 종류의 제품에서 허용된 염색 성분 |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 17, 2026
Red 40 Red 40 Lake Allura Red AC CI 16035 FD&C Red 40 FD&C Red No. 40 FD&C Red No.40
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 “Restricted” (EU CosIng — Annex III). The maximum allowed is 0.4%. A restricted ingredient is allowed 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, hair dyeing.
Korea's MFDS standard Korean name is 적색40호.
4 products we checked list it, for example Leaders PDRN+ Rejuvenate Gel Mask, Tonymoly Perfect Lips Shocking Lip, Tonymoly Squishmallows x TONYMOLY Malcolm's Strawberry Sugar Scrub.
CAS 25956-17-6 (from official records).