PPG-26/HDI Copolymer

AKA: Polypropylene Glycol 26/Hexamethylene Diisocyanate Copolymer

Synthetic

Occlusive

Not Clean

OriginSynthesized from polypropylene glycol (PPG) and hexamethylene diisocyanate (HDI) as starting materials. Produced through polymerization and condensation reactions to create a flexible copolymer film-forming agent.

Polyoxypropylene (26) and hexyldiisocyanate copolymer

Form

Liquid

State

Solid

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Functions

Film Forming

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

Plasticiser

Creates protective layer

Adds flexibility

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed1 review →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

EWG

CIR

Safe as used

Pregnancy

Yes

Concentration Guide

CIR lists it as not reported to be in use.

CIR · report published 2016

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Verified Jun 2026

Data: CosIng · EWG · CIR