PEG-4 Ditallow Ether
molecular structure · PubChem
AKA: Polyethylene Glycol 4 Ditallow Ether
Synthetic
Skin Conditioner
Not Clean
Poly(oxy-1,2-ethanediyl), .alpha.-tallow-alkyl-.omega.-tallow-alkyloxy- (4 mol EO average molar ratio)
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
Refatting
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
Traditional Use
Synthetic ether derived from polyethylene glycol and animal tallow fats, developed mid-20th century. Used as a solubilizer and emulsifier in cosmetics when natural alternatives proved unstable.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
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