ACID BLACK 1
Official label name (INCIInternational name of cosmetic ingredients: the one printed on the pack. name, EU glossary of cosmetic ingredient names), No 841
- Allowed with restrictions (Annex III)
- Colorant allowed under conditions (Annex IV)
ACID BLACK 1: Allowed with restrictions, maximum 0.5% in the ready-for-use preparation, only in: Hair dye substance in non-oxidative hair dye products (Annex III, entry 295); colorant allowed under conditions, with limits depending on the product type (Annex IV, entry 46), under Regulation (EC) No 1223/2009. Annexes of the Regulation consulted on 21 October 2026.
Who it concerns
What official classifications and rules say for each group. A classification describes the hazard of the pure substance, not the risk of a product that contains it, which depends on the dose and the exposure.
Prohibition or serious classificationThe text prohibits the substance for this use, or ranks it among the most serious hazards (known or presumed carcinogenic, mutagenic or reprotoxic, identified endocrine disruptor).Worth watchingThe text sets a condition or flags a hazard worth knowing: allergen, suspected effect, condition for children, hazard to the aquatic environment.For informationOfficial information with no condition on a finished product: warning to read, irritation of the pure substance.
Pregnancy and breastfeeding
No classification harmonised by the European Union covers reproduction, the unborn child or breastfeeding for this substance. This does not mean it has been judged to have no effect during pregnancy.
Babies and children
The Cosmetics Regulation sets no age-related condition for this ingredient.
Skin, eyes and allergies
No official classification for sensitisation, irritation or eye damage, and no obligation to label it as an allergen.
Environment
No harmonised classification as hazardous to the aquatic environment, and it is not on ECHAEuropean Chemicals Agency.'s Candidate List as an endocrine disruptor for the environment.
Read on the label
The Cosmetics Regulation requires no warning to be printed for this ingredient.
In plain words
What it is used for
Functions declared by manufacturers:
Colorant: colours cosmetics and/or imparts colour to the skin and/or its appendages.
Functions declared in the CosIngThe European Commission's database of cosmetic ingredients. inventory. CosIng, inventory of cosmetic ingredients (INCI names, CAS, EC, functions), retrieved 21 October 2026.
Definitions of functions (decision repealed on 8 May 2020, cited for information). Decision 2006/257/EC, inventory of cosmetic ingredients (definitions of functions), retrieved 22 October 2026.
What the rules say
Allowed, with restrictions: Annex III sets a maximum concentration and the product types allowed. Ingredient lists do not give quantities, so the concentration cannot be checked on the label.
An ingredient can be used as a colorant only if it appears on the list of Annex IV. ACID BLACK 1 is on it with a maximum concentration.
CosIng, Annex III of Regulation (EC) No 1223/2009 (restricted substances), retrieved 21 October 2026, source updated 13 October 2026.
CosIng, Annex IV of Regulation (EC) No 1223/2009 (allowed colorants), retrieved 21 October 2026, source updated 13 October 2026.
The text of the annexes
Allowed with restrictions
- Product type
- Hair dye substance in non-oxidative hair dye products
- Maximum concentration
- 0.5%
- Entry
- Annex III, No 295
- Substance
- 4-Amino-5-hydroxy-3-(4-nitrophenylazo)-6- (phenylazo)-2,7- naphthalenedisulfonic acid, disodium salt
- Glossary names
- Acid Black 1
- CAS
- 1064-48-8
- EC
- 213-903-1
Dates in the act (3)
- Application from 10 August 2015
It shall apply from 10 August 2015, except the provisions in point 2 of the Annex which shall apply from 10 August 2016.
- Entry into force on 10 August 2015
- Application from 10 August 2016
It shall apply from 10 August 2015, except the provisions in point 2 of the Annex which shall apply from 10 August 2016.
Excerpts from the English text published in the Official Journal. A date may concern only some substances of the act: the excerpt says so.
Regulation (EC) No 1223/2009, Annex III, entry 295. CosIng, Annex III of Regulation (EC) No 1223/2009 (restricted substances), retrieved 21 October 2026, source updated 13 October 2026.
Entry from Regulation (EU) 2015/1190, adopted on 20 July 2015.
Colorant allowed under conditions
This entry covers the same substance as ACID BLACK 1 (same CAS number in the CosIng inventory): its conditions apply.
- Maximum concentration
- Rinse-off products
- Entry
- Annex IV, No 46
- Substance
- Sodium 4-amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-(phenylazo)naphthalene-2,7-disulphonate
- Glossary names
- CI 20470
- CAS
- 1064-48-8
- EC
- 213-903-1
Regulation (EC) No 1223/2009, Annex IV, entry 46. CosIng, Annex IV of Regulation (EC) No 1223/2009 (allowed colorants), retrieved 21 October 2026, source updated 13 October 2026.
Entry from Regulation (EC) No 1223/2009, adopted on 30 November 2009.
What has changed, and what will change
Dates of the texts that cover this ingredient. A text date may cover several substances: the details of each entry are below.
Annex IV, entry 46: introduced or replaced by Regulation (EC) No 1223/2009
Annex IV, entry 46: applies from this date
Annex III, entry 295: introduced or replaced by Regulation (EU) 2015/1190
Annex III, entry 295: applies from this date
Identity
- CosIng identifier
- 105081
- CAS (according to CosIng)
- 1064-48-8
- EC (according to CosIng)
- 213-903-1
- Declared functions
- Colorant
The CAS number cited by CosIng also covers 1 other INCI name: it designates a family of substances, not this ingredient alone.
CosIng inventory. CosIng, inventory of cosmetic ingredients (INCI names, CAS, EC, functions), retrieved 21 October 2026.
EU product alerts (Safety Gate)
2 alerts on cosmetic products cite this name in their hazard description. An alert targets a specific product, not the ingredient itself. Under each alert, its reason (prohibited substance, limit exceeded, missing labelling, and so on), as published.
- 17 February 2023: Temporary tattoo, Sweden (“Serious risk”) alert
The product contains benzyl alcohol (measured value up to 3.81% by weight), but the presence is not indicated in the list of ingredients. Moreover the product contains the colorant CI 20470 (acid black 1), which is only allowed in rinse-off products.These… - 17 February 2023: Temporary Henna Tattoo, Sweden (“Serious risk”) alert
The product contains benzyl alcohol (measured value up to 4.34% by weight), but the presence is not indicated in the list of ingredients. Moreover the product contains the colorant CI 20470 (acid black 1), which is only allowed in rinse-off products. These…
Safety Gate, EU rapid alert system for dangerous non-food products: cosmetic alerts from the weekly reports, retrieved 22 October 2026.
Source: European Commission, Safety GateEU rapid alert system for dangerous non-food products. weekly reports (CC0).
Elsewhere in the world
Information on other jurisdictions, with no effect on sale in France. What is covered, and what is not yet.
Comparison between countries
Most restrictive status in each country, and the maximum concentration cited. The details and the source of each rule follow.
| Country | Rule | Maximum concentration cited |
|---|---|---|
| European Union | Allowed with restrictions | 0.5% |
| United Kingdom | Allowed with restrictions | 0.5% |
| Switzerland | EU Regulation applies | 0.5% |
| United States (federal) | No federal rule recorded | not cited |
| Japan | No entry in the lists recorded | not cited |
| South Korea | No entry in the lists recorded | not cited |
| China | Not on the prohibited lists recorded (lists of allowed substances are not recorded) | not cited |
| Australia | No entry in the lists recorded | not cited |
| Brazil | No entry in the lists recorded | not cited |
United Kingdom (Great Britain)
- Allowed with restrictions (Annex III)
- Colorant allowed under conditions (Annex IV)
Same entries as in the European Union. Their maximum concentrations are compared in the “Comparison between countries” table; other conditions (product types, warnings) may differ.
Annexes II to VI in force. United Kingdom, Annexes II to VI of Regulation (EC) No 1223/2009 as retained and amended, retrieved 21 October 2026.
Contains public sector information licensed under the Open Government Licence v3.0.
Northern Ireland applies EU law.
Switzerland
Regulation (EC) No 1223/2009 applies in Switzerland (Article 54 of the Ordinance on Foodstuffs and Utility Articles).
Switzerland, FDHA Ordinance on Cosmetic Products (OCos, SR 817.023.31), consolidated version, retrieved 22 October 2026.
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.
United States, 21 CFR part 700 and section 250.250 (FDA rules on cosmetic ingredients), eCFR, retrieved 21 October 2026.
The eCFR is not an official legal edition of the Code of Federal Regulations.
Glossary: Commission Implementing Decision (EU) 2025/1175. Page updated on 21 October 2026.