PPG-6

AKA: Polypropylene Glycol, Polypropylene Glycol 6
Synthetic
Solvent
Skin Conditioner
Not Clean
OriginPPG-6 is a synthetic polymer belonging to the propylene glycol family, derived from propylene oxide. It is synthesized through polymerization of propylene oxide using catalytic processes.
PPG-6 is the polymer of propylene oxide
CAS #
57-55-6; 24800-44-0; 25322-69-4
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Locks in moisture
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
4
CIR
Safe as used
Pregnancy
Yes
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR