Moderate Cosmetic Ingredient NOAEL Data SCCS/CIR Reviewed

HC Red No. 18

INCI: HC RED NO. 18

CAS Number
1444596-49-9
Function
Hair dyeing - direct dye for both oxidative and non-oxidative hair color formulations
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Allowed under the coal tar hair dye exemption. As a relatively new dye, it may not yet appear in all regulatory inventories.

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

5 study endpoints found for HC Red No. 18. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOAEL 3 mg/kg bw/day oral rat subchronic SCCS_PDF_extraction
NOAEL 0.013 mg/kg bw/day oral rat subchronic SCCS_PDF_extraction
NOAEL 2.31 mg/kg bw/day oral rat subchronic SCCS_PDF_extraction
NOAEL 0.022 mg/kg bw/day oral rat subchronic SCCS_PDF_extraction
NOAEL 3 mg/kg bw/day - - - SCCS_PDF_extraction

Safety Opinions

Official safety assessments from the Scientific Committee on Consumer Safety (SCCS) and Cosmetic Ingredient Review (CIR).

sccs SCCS/1673/24 22 January 2025
Verdict: safe
NOAEL: 3 mg/kg bw/d (oral)

formulations? In light of the data provided, the SCCS considers HC Red 18 safe when used as an ingredient at 1.5% in oxidative hair dye and at 0.5% in non-oxidative hair dye formulations. (2) Does the SCCS have any further scientific concerns with regard to the use of

Expert Verdict

The SCCS did not raise further scientific concerns in its most recent opinion regarding the provided purity data. Standard direct dye safety considerations (sensitization, nitrosamine formation) apply.. One of the newest HC Red dyes under regulatory evaluation. The SCCS opinion was driven by updated purity characterization data in Submission II.

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Concern Level: Moderate

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is HC Red No. 18 safe in cosmetics?

The SCCS did not raise further scientific concerns in its most recent opinion regarding the provided purity data. Standard direct dye safety considerations (sensitization, nitrosamine formation) apply.. One of the newest HC Red dyes under regulatory evaluation. The SCCS opinion was driven by updated purity characterization data in Submission II. The EU classifies HC Red No. 18 as "restricted". Safety rating: MODERATE. 5 toxicological study endpoint(s) are available in our database. This ingredient has been reviewed by sccs.

Is HC Red No. 18 allowed in the EU?

HC Red No. 18 EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does HC Red No. 18 do in cosmetics?

HC Red No. 18 functions as: Hair dyeing - direct dye for both oxidative and non-oxidative hair color formulations. It is classified as a cosmetic ingredient in our database. CAS number: 1444596-49-9.

What is the Margin of Safety for HC Red No. 18?

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.

What is the NOAEL for HC Red No. 18?

The NOAEL (No Observed Adverse Effect Level) for HC Red No. 18 is 3 mg/kg bw/day based on a subchronic study via oral route in rat. A total of 5 study endpoints are available. Source: SCCS_PDF_extraction.

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