C4-5 Isoalkyl Cocoate

AKA: Coconut Oil Ester

Allergen Warning

⚠️ Tree Nut (Coconut)

Synthetic

Emollient

Skin Conditioner

Plant Oil

Not Clean

C4-5 Isoalkyl Cocoate is the ester of a branched, saturated fatty alcohol containing 4 to 5 carbons, with Coconut Acid

CAS #

-

Form

Liquid

Functions

Emollient

Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.

Locks In Moisture

Traditional Use

A synthetic ester derived from coconut oil fatty acids and branched-chain alcohols, developed as a stable alternative to natural coconut oil esters in cosmetic formulations.

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

Dryness

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