Regulatory Status
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Safety Data
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Expert Verdict
Bis-azo dye with two azo bonds that may release multiple aromatic amines upon reductive cleavage. Structural alert for mutagenicity with no genotoxicity, DART, or repeated-dose safety data available. Cannot be used compliantly without a complete safety dossier.
Regulatory Flags
Frequently Asked Questions
Is Basic Brown 4 safe in cosmetics?
Bis-azo dye with two azo bonds that may release multiple aromatic amines upon reductive cleavage. Structural alert for mutagenicity with no genotoxicity, DART, or repeated-dose safety data available. Cannot be used compliantly without a complete safety dossier. The EU classifies Basic Brown 4 as "prohibited". Safety rating: POOR.
Is Basic Brown 4 allowed in the EU?
Basic Brown 4 EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does Basic Brown 4 do in cosmetics?
Basic Brown 4 functions as: Hair colorant (bis-azo dye). It is classified as a cosmetic ingredient in our database. CAS number: 5421-66-9.
What is the Margin of Safety for Basic Brown 4?
not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.
Compliance Tools
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Related Ingredients
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