2,4-Diaminodiphenylamine, when used as a substance in hair dye products

2,4-Diaminodiphenylamine, when used as a substance in hair dye products in plain language

What it is

On cosmetic ingredient lists it appears as “4-DIAMINODIPHENYLAMINE”.

Also known as 4-DIAMINODIPHENYLAMINE · 2,4-DIAMINODIPHENYLAMINE · 1,2,4-Benzenetriamine, N'-phenyl- · 1,2,4-BENZENETRIAMINE, n(sup 1)-PHENYL- · 1-N-phenylbenzene-1,2,4-triamine · Diphenylamine, 2,4-DIAMINO-

Show all 16 names

N~1~-Phenylbenzene-1,2,4-triamine · 1,2,4-Benzenetriamine, N1-phenyl- · 1,2,4-Benzenetriamine, N1-phenyl-(8CI) · 1,2,4-Benzenetriamine, N1-phenyl-(8CI)(9CI) · 1,2,4-Benzenetriamine, N~1~-phenyl- · 3-13-00-00552 (Beilstein Handbook Reference) · N(sup 1)-Phenyl-1,2,4-benzenetriamine · N1-phenylbenzene-1,2,4-triamine · UNII-45DN363J8C · Vosliuivgwbsok-uhfffaoysa-n

What it does

Used in consumer products as a colourant.

• Colourant

Is it a concern?

Critical concern: no hazard classifications on record. It is banned in EU cosmetics.

Why it's flagged

2,4-Diaminodiphenylamine, when used as a substance in hair dye products is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — banned

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

• EU Annex II — prohibited
• EU prohibited in cosmetics

• EU·EC

  Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.

  banned
  View source →

• EU·CosIng·ActiveCosmetics Regulation annex II / ref 1214.

  • Cosmetics Regulation annex II / ref 1214.Source →
• US·EPA·commercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Dye.

  • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Dye.Source →
• US·FDA·listed in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.

  • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for 2,4-Diaminodiphenylamine, when used as a substance in hair dye products. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

• SCCS

  EU Scientific Committee on Consumer Safety

  No SCCS opinion on file.

• CIR

  Cosmetic Ingredient Review (US expert panel)

  No CIR safety assessment on file.