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Related Experiment Video

Updated: Jun 16, 2026

Quantitation of Protein Expression and Co-localization Using Multiplexed Immuno-histochemical Staining and Multispectral Imaging
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Final report on the safety assessment of Basic Violet 1, Basic Violet 3, and Basic Violet 4.

Catherine Diamante1, Wilma F Bergfeld, Donald V Belsito

  • 1Cosmetic Ingredient Review, 1101 17th Street, NW, Suite 412, Washington, DC 20036, USA.

International Journal of Toxicology
|January 21, 2010
PubMed
Summary
This summary is machine-generated.

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Basic Violet 1, 3, and 4 dyes, used in hair colorants, raise safety concerns due to potential carcinogenicity. Insufficient data prevents a full safety assessment for cosmetic use.

Area of Science:

  • Cosmetic Science
  • Toxicology
  • Dermatology

Background:

  • Basic Violet 1, 3, and 4 are triphenylmethane dyes used as direct hair colorants.
  • Gentian Violet is often used interchangeably with Basic Violet 1 and 3, despite structural differences.
  • Current cosmetic use and concentrations for these dyes are not reported.

Purpose of the Study:

  • To evaluate the safety of Basic Violet 1, 3, and 4 in cosmetic formulations.
  • To identify data gaps in the safety assessment of these hair dye ingredients.

Main Methods:

  • Review of existing data on Basic Violet 1, 3, and 4.
  • Assessment of the chemical properties, including the presence of quaternary ammonium ions.
  • Evaluation of the Cosmetic Ingredient Review Expert Panel's findings.

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Main Results:

  • Basic Violet 1, 3, and 4 contain quaternary ammonium ions, suggesting slow dermal penetration.
  • The carcinogenic potential of these dyes is a significant concern.
  • Insufficient data exists to confirm the safety of these dyes in cosmetic products.

Conclusions:

  • Further research, including dermal absorption studies and a comprehensive risk assessment, is required.
  • The safety of Basic Violet 1, 3, and 4 for cosmetic use cannot be established with current data.
  • Concerns regarding carcinogenic potential necessitate caution in their application.