Carboxymethyl Cellulose Acetate Butyrate

AKA: Cellulose Acetate Butyrate Carboxylate, Cellulose Ester
Synthetic
Occlusive
Emulsifier
Clean
OriginDerived from cellulose, a polysaccharide extracted from plant cell walls, typically sourced from wood pulp. Synthesized by chemically modifying carboxymethyl cellulose through esterification with acetic and butyric anhydrides.
Carboxymethyl Cellulose Acetate Butyrate is the product obtained by the reaction of butyric and acetic anhydrides with carboxymethyl cellulose
CAS #
9050-04-8
Form
Powder
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Viscosity Controlling
Stabilizes Emulsion
Creates Protective Barrier
Controls Viscosity
Antioxidant Protection
Reduces Inflammation
Locks In Moisture
Creates protective layer
Keeps product blended
Controls product thickness
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
1
CIR
Safe as used
Pregnancy
Yes
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR