PPG-4 Butyl Ether

AKA: Polypropylene Glycol 4 Butyl Ether, Butoxypropanol

Synthetic

Skin Conditioner

Hair Care

Not Clean

OriginPPG-4 Butyl Ether is synthesized from propylene glycol and butyl alcohol through polymerization and etherification reactions. The compound is produced by linking propylene oxide units with butanol via catalytic synthesis.

Polyoxypropylene (4) butyl ether

CAS #

9003-13-8

Form

Liquid

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Functions

Hair Conditioning

A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.

Skin Conditioning

A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.

Locks in moisture

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed0 reviews

Counts, not a verdict. A listing isn't a study. The trail, you decide.

EWG

CIR

Safe as used

Pregnancy

Yes

Concentration Guide

CIR lists it as not reported to be in use.

CIR · report published 2022

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