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HC BLUE NO. 13.

Insufficient Data / HAIR DYEING

HC BLUE NO. 13 is a synthetic colorant primarily utilized in hair care formulations. It is designed to impart a blue pigment by physically adhering to the hair shaft without requiring chemical reactions with other ingredients. Its utility in direct skincare applications is not established.

Summary

hair dyeing

Science

Mechanism of Action

This ingredient functions as a direct dye, coloring surfaces through adsorption. In hair applications, it deposits onto the hair surface, providing color without covalent bonding. For direct application to the skin, no specific mechanism of action or benefit has been identified.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Unknown
Optimal pH N/A
0 7 14

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

HC Blue No. 13 is recognized as a hair dye ingredient. The Scientific Committee for Consumer Safety (SCCS) of the EU Commission has assessed numerous hair colorants, including HC Blue No. 13, deeming them safe for use within Annex III of the EC Cosmetics Regulation for their intended purpose in hair products. However, the Cosmetic Ingredient Review (CIR) and FDA have not published specific maximum concentration limits or detailed safety assessments for HC Blue No. 13 for general cosmetic applications beyond hair dyeing.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Insufficient Data

HC Blue No. 13 is primarily a hair colorant with safety established by EU authorities for hair applications, but its efficacy, compatibility, and specific safety profile for direct skincare use remain largely unassessed.

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