4-Methoxy-m-Phenylenediamine-HCI
AKA “4-Methoxy-m-Phenylenediamine HCl
Synthetic
Ingredient Facts
4-Methoxy-m-Phenylenediamine-HCI
AKA: 4-Methoxy-m-Phenylenediamine HCl
Synthetic · Colorant · EWG: 4
Synthetic
Colorant
Synthetic
Clean
A plant-derived colorant that delivers rich, vibrant hues to hair and beauty products. Creates long-lasting color that resists fading.
Form
Liquid
See origin →
Functions
Colorant
Gives the product its color. Purely aesthetic — makes the formula look good in the jar but does nothing for your skin.
Traditional Use
A synthetic hair dye precursor developed in the early-to-mid 20th century. The hydrochloride salt form was created to enhance stability and solubility in aqueous hair dye formulations.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
No
Allergen Warning
⚠️ PPD (Hair Dye)
EWG
4
CIR
Insufficient
Pregnancy
No
CIR Safety Findings
medical-approval
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR