PEG-8 Propylheptyl Ether
molecular structure · PubChem
AKA: Polyethylene Glycol 8 Propylheptyl Ether
Synthetic
Emulsifier
Clean
PEG-8 Propylheptyl Ether is a cosmetic ingredient used as emulsion stabilising. Rated low hazard by EWG. Assessed as safe by the CIR.
CAS #
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Functions
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Stabilizes Emulsion
Reduces Inflammation
Locks In Moisture
Fights Bacteria
Keeps product blended
Traditional Use
A synthetic ether compound developed in the late 20th century for use as a solvent and emulsifier in cosmetic formulations.
EWG
1
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-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR