ACID BLUE 74 ALUMINUM LAKE

Annex IV–VI CAS: 16521-38-3CosIng #54156

ACID BLUE 74 ALUMINUM LAKE is approved in cosmetics in the EU as a colourant — Annex IV, entry 99 of Regulation (EC) No 1223/2009. Review the permitted product categories and Safety Gate alerts.

Regulatory status as of 2026-08-28 (per the CosIng database).

About the ingredient

2-(1,3-Dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-1H-indole-5-sulfonic acid aluminium complex (CI 73015)

EU regulatory status

Annex of Regulation (EC) No 1223/2009: IV/99

Source: the European Commission's official CosIng database and Regulation (EC) No 1223/2009 of the European Parliament and of the Council on cosmetic products. How we assess ingredients — full methodology.

Last updated:

Functions in cosmetics

Frequently asked questions

  • Is ACID BLUE 74 ALUMINUM LAKE safe in cosmetics?

    ACID BLUE 74 ALUMINUM LAKE is included on the EU positive list of special-purpose additives (Annex IV – colorants, Annex V – preservatives, or Annex VI – UV filters of Regulation (EC) No 1223/2009). It may be used in cosmetics under the conditions laid down for the relevant annex: permitted product categories, maximum concentration and required warnings.

  • In which annex of Regulation 1223/2009 is ACID BLUE 74 ALUMINUM LAKE listed?

    ACID BLUE 74 ALUMINUM LAKE is listed under reference IV/99 in the annexes of Regulation (EC) No 1223/2009 on cosmetic products. The first part (Roman numeral) indicates the annex: II – prohibited substances, III – substances restricted by conditions, IV – permitted colorants, V – permitted preservatives, VI – permitted UV filters.

  • What functions does ACID BLUE 74 ALUMINUM LAKE perform in cosmetics?

    According to the European Commission's CosIng database, ACID BLUE 74 ALUMINUM LAKE performs the following functions in cosmetics: HAIR DYEING. Functions are defined in the CosIng glossary and describe the technological role of a substance in the finished product.

  • Are there Safety Gate alerts concerning ACID BLUE 74 ALUMINUM LAKE?

    Our copy of the EU Safety Gate database currently contains no alerts linking ACID BLUE 74 ALUMINUM LAKE to a cosmetic recall. The database is refreshed regularly from the European Commission's official Safety Gate system.

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