Bis-Isostearyl 1,4-Butanediol/HDI/Hydrogenated Dimer Dilinoleyl Alcohol Copolymer

AKA: Film Former, Polymer Emollient

Plant-Derived

Not Clean

Bis-Isostearyl 1,4-Butanediol/HDI/Hydrogenated Dimer Dilinoleyl Alcohol Copolymer ia a copolymer of hexamethylenediisocyanate (HDI) and Hydrogenated Dilinoleyl Alcohol endcapped with isostearyl 1,4-butanediol.

Form

Liquid

Functions

Viscosity Controlling

Controls Viscosity

Traditional Use

A complex synthetic copolymer developed for cosmetics to provide conditioning properties and improve formulation stability, with no traditional cosmetic or medicinal history.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

Dryness

Pregnancy & Breastfeeding Safe

Yes

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.

Verified Jun 2026

Data: CosIng · EWG · CIR