Dierucic Acid

AKA: Erucic acid dimer, Pripol 1004, 13-Docosenoic acid, Dimer, DIERUCIC ACID [INCI], 63541-50-4

Synthetic

Skin Conditioner

Acid

Not Clean

13-Docosenoic acid, (Z)-, dimer

Formula

C44H84O4

Mol. Weight

677.10

CAS #

63541-50-4

Form

Liquid

State

Solid

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.

Locks in moisture

Traditional Use

Fatty acid derived from erucic acid found in certain plant oils, historically used in traditional medicine for skin conditioning. Adapted for modern cosmetics as a stable, long-chain fatty acid emollient.

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-reviewed1 paper →

⚖️Regulatory1 listing →

🛡️Safety-assessed1 review →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: PubChem · CosIng · EWG · CIR