Korean: 하이드록시에틸-2-나이트로-p-톨루이딘 · CAS 100418-33-5 · Functions: hair dyeing
Restricted MFDS restricted ingredients
Conditions (official MFDS text, Korean):
다만, 하이드록시에칠-2-니트로-p-톨루이딘은 염모제에서 용법·용량에 따른 혼합물의 염모성분으로서 1.0 % 이하는 제외
Source: MFDS — cosmetic ingredient use restrictions · checked Oct 17, 2026
Restricted Annex III/221
Maximum: (b) 1,0%
Conditions: Product type: (a) Hair dye substance in oxidative hair dye products (b) Hair dye substance in non-oxidative hair dye products (a) After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 1,0% For (a) and (b): - Do not use with nitrosating agents - Maximum nitrosamine content 50 microgram/Kg - Keep in nitrite-free containers
Required label warning: To be printed on the label: Hair colorants can use severe allergic reactions
Source: EU CosIng — Annex III · checked Oct 17, 2026
No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.
How Hydroxyethyl-2-Nitro-p-Toluidine is treated in 3 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): * 【화장품 중 최대사용농도】 배합한도 (산화형 염색제) : 1% * 【화장품 중 최대사용농도】 배합한도 (비산화형 염색제) : 1% * 기타 제한조건 및 요구사항 : 니트로화 시스템과 함께 사용하지 않고 니트로아소민의 최대함량은50μg/kg이며 아질산염이 없는 용기에 보존하여야 함. |
| AS ASEAN (10 countries) | Restricted | MFDS summary (Korean): * 【Restrictions】 Field of application and/or use : (a) Hair dye substance in oxidative hair dye products (b) Hair dye substance in non-oxidative hair dye products Use for dyeing eyelashes and eyebrows is not permitted. * 제한 【사용 범위】 : (a) 산화형 염모제에 염색 성분으로 (b) 비산화형 염모제에 염색 성분으로 눈썹이나 속눈썹의... |
| TW Taiwan | Restricted | MFDS summary (Korean): ※ 限量標準：係指該成分依產品使用說明書混合後之最高允許使用量。 ※ 本表成分除另有規定外，限使用於染髮劑類產品，其他類化粧品不得掺用。 * 단서조항 : ※ 限量標準：係指該成分依產品使用說明書混合後之最高允許使用量。 ※ 本表成分除另有規定外，限使用於染髮劑類產品，其他類化粧品不得掺用。 ※ 제한 표준 : 제품 사용 설명서에 따라 혼합 후 성분의 최대 허용 사용량을 나타냅니다. ※ 달리 명시되지 않는 한, 이 표의 성분은 머리 염색 제품으로 제한되며 다른 화장품은 혼합 할 수 없습니다. * 用途(용도) : 染髮 (염모제) * 배합한도 :... |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 17, 2026
Hydroxyethyl-2-Nitro-p-Toluidine 하이드록시에틸-2-나이트로-p-톨루이딘
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 (b) 1,0%. 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: hair dyeing.
Korea's MFDS standard Korean name is 하이드록시에틸-2-나이트로-p-톨루이딘.
CAS 100418-33-5 (from official records).