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DIHYDROXYINDOLINE HBR.

Avoid CAS 138937-28-7 / HAIR DYEING

Dihydroxyindoline HBr is an ingredient primarily used in semi-permanent hair dye formulations. Its function is to provide coloration and enhance color retention in hair.

Summary

Hair Dyeing Agent

Science

Mechanism of Action

As a hair dye, Dihydroxyindoline HBr chemically binds with hair proteins. This interaction allows for color deposition within the hair structure, contributing to color retention and longevity.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 SCCNFP Opinion SCCNFP/0669/03

Transparency

Dusting Analysis

Not commonly dusted

This ingredient is primarily used as a hair dye and is not commonly associated with dusting issues in skincare formulations.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Data regarding the stability of Dihydroxyindoline HBr has not been provided by relevant committees.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
2%
Sensitization risk Moderate

The SCCNFP found Dihydroxyindoline HBr safe for semi-permanent hair dye use at concentrations up to 2.0%. However, EWG notes general use restrictions, and GHS hazard statements indicate it is harmful if swallowed and causes serious eye damage.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Primarily a hair dye with safety restrictions and no known skin benefits, Dihydroxyindoline HBr is unsuitable for skincare formulations.

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