Dierucic Acid

AKA: Erucic acid dimer, Pripol 1004, 13-Docosenoic acid, Dimer, DIERUCIC ACID [INCI], 63541-50-4
Synthetic
Skin Conditioner
Acid
Not Clean
OriginDerived from long-chain fatty acids found in cruciferous plant oils, particularly mustard and rapeseed sources. Synthesized through selective hydrogenation and isomerization of erucic acid to produce the branched-chain variant.
13-Docosenoic acid, (Z)-, dimer
Formula
C44H84O4
Mol. Weight
677.10
CAS #
63541-50-4
Form
Liquid
State
Solid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
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
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.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2019
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR