Is HC Blue No. 18 safe in cosmetics?
HC Blue No. 18 has a safety rating of "GOOD" in our database. EU status: prohibited. US status: permitted.
Good
Cosmetic Ingredient
HC Blue No. 18
INCI: HC BLUE NO. 18
HC Blue No. 18 (CAS 1166834-57-6 / 852356-91-3) is a cosmetic cosmetic ingredient functioning as Hair dyeing — azo-type direct dye for oxidative and non-oxidative formulations. EU Regulation 1223/2009 status: prohibited, max 0.35%. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 1166834-57-6 / 852356-91-3 →
Auto-generated CPSR Part A draft with source citations
Function
Hair dyeing — azo-type direct dye for oxidative and non-oxidative formulations
Safety Rating
GOOD
Regulatory Status
EU EU Status
prohibited
EU Max Conc.
0.35%
US US Status
permitted
US Notes
Permitted under coal tar hair dye exemption (21 CFR 740.2).
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for HC Blue No. 18.
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Expert safety assessment and concern-level summary for HC Blue No. 18.
Regulatory Flags
potential-allergen
Frequently Asked Questions
Is HC Blue No. 18 allowed in the EU?
HC Blue No. 18 EU regulatory status: prohibited. Maximum allowed concentration: 0.35%. This is based on EU Regulation 1223/2009 and its amendments.
What does HC Blue No. 18 do in cosmetics?
HC Blue No. 18 functions as: Hair dyeing — azo-type direct dye for oxidative and non-oxidative formulations. It is classified as a cosmetic ingredient in our database. CAS number: 1166834-57-6 / 852356-91-3.
Compliance Tools
Check HC Blue No. 18 compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
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