Polyglyceryl-4 Caprylate

Polyglyceryl-4 Caprylate molecular structure
molecular structure · PubChem
AKA: Caprylic Acid Polyglyceryl Ester, Emulsifier
Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Clean
OriginDerived from caprylic acid (an 8-carbon saturated fatty acid) and polyglycerin-4, both synthetic or chemically processed materials. Synthesized through esterification reaction between caprylic acid and polyglycerin-4 under controlled conditions.
Polyglyceryl-4 Caprylate is the monoester of Caprylic Acid and Polyglycerin-4
CAS #
-
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Locks In Moisture
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2023
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR