C30-50 Pareth-40

AKA: Polyethylene Glycol Ether, PEG Surfactant

Synthetic

Cleanser

Emulsifier

Not Clean

OriginC30-50 pareth compounds are derived from long-chain paraffin waxes and polyethylene glycol (PEG) chemical families. Synthesized through ethoxylation, where ethylene oxide is chemically bonded to paraffin wax chains.

Alcohols, C30-50, ethoxylated (40 mol EO average molar ratio)

CAS #

246538-85-2

Form

Liquid

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Functions

Cleansing

Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.

Cleansing

Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.

Emulsifying

Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.

Removes Impurities

Cleansing Surfactant

Emulsifier

Mixes Oil & Water

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

CIR

Safe as used

Pregnancy

Yes

Concentration Guide

CIR lists it as not reported to be in use.

CIR · report published 2012

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