Oleth-110

Oleth-110 molecular structure
molecular structure · PubChem
AKA: PEG-110 oleyl ether, Polyoxyethylene oleyl ether, UNKNOWN
Synthetic
Skin Conditioner
Plant Oil
Not Clean
Oleth-110 is the polyethylene glycol ether of oleyl alcohol.
Effective at 9.03%
CAS #
9002-92-0; 68439-50-9; 5274-68-0; 9004-95-9; 9005-00-9; 4536-30-5; 3055-93-4; 3055-94-5; 3055-95-6
Form
Liquid
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Traditional Use
Synthetic surfactant and emulsifier developed in the mid-20th century by ethoxylating oleyl alcohol. These polyethylene glycol derivatives were created to provide stable emulsification and solubilization properties in cosmetics and pharmaceuticals.
EWG
4
CIR
Safe as used
Pregnancy
Yes
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
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: CosIng · EWG · CIR