Regulatory Status
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Safety Data
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Expert Verdict
EU-prohibited in hair dye products due to failure to submit required safety data by regulatory deadline. US status restricted due to lack of safety substantiation.
Regulatory Flags
Frequently Asked Questions
Is 4-Hydroxyindole safe in cosmetics?
EU-prohibited in hair dye products due to failure to submit required safety data by regulatory deadline. US status restricted due to lack of safety substantiation. The EU classifies 4-Hydroxyindole as "prohibited". Safety rating: POOR.
Is 4-Hydroxyindole allowed in the EU?
4-Hydroxyindole EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does 4-Hydroxyindole do in cosmetics?
4-Hydroxyindole functions as: Hair dyeing. It is classified as a cosmetic ingredient in our database. CAS number: 2380-94-1.
What is the Margin of Safety for 4-Hydroxyindole?
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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