HDI/Di-C12-14 Alkyl Tartrate/Hydrogenated Dilinoleyl Alcohol Copolymer

AKA: HDI polymer, Aliphatic polyisocyanate copolymer

Synthetic

Occlusive

Chemical Exfoliant

Not Clean

Fatty acids, C18 unsatd., dimers, di-Me esters, hydrogenated, polymers with C12-14-branched and linear alkyl tartarate and 1,6-diisocyanatohexane

CAS #

1268856-56-9

Form

Liquid

State

Liquid

Functions

Film Forming

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

Creates Protective Barrier

Traditional Use

A modern synthetic polymer developed in the late 20th century by combining HDI (hexamethylene diisocyanate) chemistry with natural tartrate and plant-derived alcohol components. Created for use as a film-forming and emulsifying agent in contemporary cosmetic formulations.

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

General

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