PPG-4-Ceteth-1
molecular structure · PubChem
AKA: Polypropylene Glycol-4 Ceteth-1, Surfactant
Synthetic
Cleanser
Skin Conditioner
Not Clean
Oxirane, methyl-, polymer with oxirane, hexadecyl ether
CAS #
9087-53-0, 37311-01-6
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.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Locks in moisture
Traditional Use
A synthetic polypropylene glycol ether derivative created as a modern emulsifying and surfactant ingredient for cosmetic products, with no traditional use.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Restricted By
CIR Safety Findings
Not an Irritant
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