Colorant

4-Diaminophenoxyethanol Hcl

Oxidative hair dye (primary intermediate/coupler)
Limited Data
Insufficient safety data available. Consider enriching this ingredient.
Details

Description

Oxidative hair dye (primary intermediate/coupler)

Purpose

Function

Oxidative hair dye (primary intermediate/coupler)
Profile

Properties

Silicone
Silicone free
Compliance

Regulatory Status

EU
Restricted
Safety
MODERATE
US
Permitted
EU Max Concentration2.0%
Absorptionlow
Sensitizationmoderate
MoSadequate
NOAEL20 mg/kg
ConcernModerate
Verdict

Concentration limits strictly enforced; eyelash dye use limited to professionals; must carry "Can cause allergic reaction" label

US Note

CIR: Safe as a cosmetic ingredient in hair dyes as practiced

Assessment

Ratings

Comedogenic0/5
LowHigh
Irritancy1/5
LowHigh
Reference

Identifiers

Category
Colorant
Updated
Apr 23, 2026

No registry identifiers available for this ingredient.