Oleth-100

AKA: PEG-100 oleyl ether, Polyoxyethylene oleyl ether, UNKNOWN

Synthetic

Cleanser

Clean

Oleth-100 is the polyethylene glycol ether of Oleyl Alcohol

Effective at 9.03%

CAS #

-

Form

Liquid

Functions

Cleansing

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

Cleansing Surfactant

Removes Impurities

Traditional Use

A synthetic polyethylene glycol ether derived from oleyl alcohol with a higher ethoxylation level than Oleth-10, developed as a solubilizer and emulsifier for cosmetic formulations requiring enhanced stability.

EWG

CIR

Safe as used

Pregnancy

Yes

Restricted By

Credo Beauty Whole Foods Premium Body Care Beauty Heroes MADE SAFE EWG VERIFIED

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Concentration Guide

0.06%

18.0%

0%25%

Reported use

CIR reported use: 0.1-18 | 0.3-10 | 1-4 | 0.06-10

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-assessed2 reviews →

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

Verified Jun 2026

Data: CosIng · EWG · CIR