AKA: 128729-28-2, Imexine OAX, Hydroxypropyl bis(N-hydroxyethyl-p-phenylenediamine) hydrochloride, 2-Propanol, Tetrahydrochloride, 1, 3-Bis-((4-amino-phenyl)-(2-hydroxy-ethyl)-amino)-propan-2-ol, Hydrochloride (1:4)
1,4-Benzenediamine, N(4)-(2-hydroxyethyl)-N(1),N'(1)-[2-hydroxypropanediyl]-
Pregnancy & Breastfeeding Safe
Caution
Allergen Warning
⚠️ PPD (Hair Dye)
The paper trail
🔬Peer-reviewednone on file
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
CIR Safety Findings
Dermal Absorption 0.004–1%
4 animal and lab (in vitro) studies in the CIR safety assessment (CIR 641)
Regulatory Status
JAPAN✔ permitted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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