Polyurethane-8

AKA: Film-forming polymer

Synthetic

Occlusive

Not Clean

OriginPolyurethane-8 is derived from the chemical family of polyurethanes, synthesized from polyols and isocyanates. It is produced through the condensation reaction of these precursor molecules, creating a polymer chain.

Polyurethane-8 is a copolymer of polyethylene-poly(tetramethylene)glycol, propanoic anhydride, isophorone diisocyanate, and isophorone diamine

CAS #

-

Form

Powder

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Functions

Binding

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

Holds ingredients together

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's newest survey reports no concentration of use.

CIR · report published 2017

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