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KBeauty Verified™ — K-beauty checked against official records from Korea, the EU and the U.S.

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1-(Beta-Ureidoethyl)amino-4-nitrobenzene and its salts (e.g. 4-Nitrophenyl aminoethylurea) (with the exception of 4-Nitrophenyl aminoethylurea as the hair dye substance under the mixing under oxidative conditions the maximum concentration applied to hair must not exceed 0.25% (0.5% as non-oxidative conditions)

Korean: 1-(베타-우레이도에틸)아미노-4-나이트로벤젠 및 그 염류(예 : 4-나이트로페닐아미노에틸우레아)(다만, 4-나이트로페닐아미노에틸우레아는 산화염모제에서 용법·용량에 따른 혼합물의 염모성분으로서 0.25 % 이하, 비산화염모제에서 용법·용량에 따른 혼합물의 염모성분으로서 0.5 % 이하는 제외) · CAS 27080-42-8 ·

KR South Korea (MFDS)

Prohibited MFDS prohibited ingredients

Conditions (official MFDS text, Korean):
다만, 4-니트로페닐 아미노에칠우레아는 산화형염모제에서 용법·용량에 따른 혼합물의 염모성분으로서 0.25 % 이하, 비산화형염모제에서 용법·용량에 따른 혼합물의 염모성분으로서 0.5 % 이하는 제외

Source: MFDS — cosmetic ingredient use restrictions · checked Oct 16, 2026

EU European Union (CosIng)

No specific rule on file.

US United States (FDA)

No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.

Also listed as

1-(Beta-Ureidoethyl)amino-4-nitrobenzene and its salts (e.g. 4-Nitrophenyl aminoethylurea) (with the exception of 4-Nitrophenyl aminoethylurea as the hair dye substance under the mixing under oxidative conditions the maximum concentration applied to hair must not exceed 0.25% (0.5% as non-oxidative conditions) 1-(베타-우레이도에틸)아미노-4-나이트로벤젠 및 그 염류(예 : 4-나이트로페닐아미노에틸우레아)(다만, 4-나이트로페닐아미노에틸우레아는 산화염모제에서 용법·용량에 따른 혼합물의 염모성분으로서 0.25 % 이하, 비산화염모제에서 용법·용량에 따른 혼합물의 염모성분으로서 0.5 % 이하는 제외)

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.