Cellulose Acetate Butyrate

AKA: CAB, Cellulose acetate butyrate resin

Synthetic

Occlusive

Clean

OriginDerived from cellulose, a polysaccharide polymer extracted from plant cell walls, typically from wood pulp or cotton. Produced through esterification of cellulose with acetic and butyric acid anhydrides under controlled conditions.

Cellulose, acetates, butanoates

CAS #

9004-36-8

Form

Powder

Skin Types

●all-skin-types, gentle

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.

Creates Protective Barrier

Antioxidant Protection

Reduces Inflammation

Fights Bacteria

The paper trail

🔬Peer-reviewed1 paper →

⚖️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

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