Polyglyceryl-4 Caprylate

AKA: Caprylic Acid Polyglyceryl Ester, Emulsifier

Synthetic

Emollient

Cleanser

Emulsifier

Skin Conditioner

Clean

Polyglyceryl-4 Caprylate is the monoester of Caprylic Acid and Polyglycerin-4

CAS #

-

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

Traditional Use

Synthesized as a mild, plant-derived emulsifier from caprylic acid and polyglycerol. Created to provide effective emulsification in gentle cleansing products, particularly in natural and organic skincare lines.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

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.

Verified Jun 2026

Data: CosIng · EWG · CIR