2,4-DIAMINOPHENOL
Official label name (INCI name, EU glossary of cosmetic ingredient names), No 160
- Prohibited in hair dyes (Annex II)
2,4-DIAMINOPHENOL: Prohibited in hair dyes (Annex II, entry 1338), under Regulation (EC) No 1223/2009.
In plain words
What it is used for
Functions declared by manufacturers:
Hair dyeing: colours hair.
What the rules say
Prohibited as a substance in hair dye products. This entry does not cover other uses, which may fall under another annex.
The text of the annexes
Prohibited in hair dyes
CosIng links the name 2,4-DIAMINOPHENOL to this entry. The cases of prohibition are explained above, in “In plain words”; the official title is given below.
- Entry
- Annex II, No 1338
- Substance
- 1-Hydroxy-2,4-diaminobenzene (2,4-Diaminophenol) and its dihydrochloride salts (2,4-Diaminophenol HCl) when used as a substance in hair dye products
- CAS
- 95-86-3 -- 137-09-7
- EC
- 202-459-4 -- 205-279-4
Dates in the act (3)
- Entry into force on 15 May 2013
- Application from 11 July 2013
It shall apply from 11 July 2013.
- Entry into force on 11 July 2013
Excerpts from the English text published in the Official Journal. A date may concern only some substances of the act: the excerpt says so.
Identity
- CosIng identifier
- 31473
- CAS (according to CosIng)
- 95-86-3
- EC (according to CosIng)
- 202-459-4
- Declared functions
- Hair dyeing
Elsewhere in the world
Information on other jurisdictions. What is covered, and what is not yet.
United Kingdom (Great Britain)
- Prohibited in hair dyes (Annex II)
Same entries as in the European Union. Conditions (concentrations, warnings) may differ: they are not compared here.
Switzerland
Regulation (EC) No 1223/2009 applies in Switzerland (Article 54 of the Ordinance on Foodstuffs and Utility Articles).
United States, federal rules
None of the integrated sections of the federal code (21 CFR 700.11 to 700.27 and 250.250) targets this name. The FDA does not publish a list of allowed ingredients.
China
- Prohibited: 1-羟基-2,4-二氨基苯（2,4-二氨基苯酚）及其盐酸盐 (1-Hydroxy-2,4-diaminobenzene （2,4-Diaminophenol） （CAS No. 95-86-3） and its dihydrochloride salt （2,4-Diaminophenol HCl） （CAS No. 137-09-7）)
表1 化妆品禁用原料目录 (prohibited substances, 2021年第74号), entry 48, page 附件2 (.doc) table row 48 ; TID reprint p.4.
Brazil
- Prohibited: 1-hidroxi-2,4-diaminobenzeno (2,4-diaminofenol) e respectivo sal de dicloridrato (2,4-diaminofenol HCl), quando usado como substância que entra na composição de corantes capilares em concentrações maiores que 0,2% (base livre)
RDC 529/2021, Anexo (prohibited substances), entry 1338, page 46. Conditions (source text, in Portuguese): N° UE: 1338
Glossary: Commission Implementing Decision (EU) 2025/1175. Page updated on 21 October 2026.