Juglans regia (Walnut) seed oil

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AKA: Persian walnut, Walnut Seed Oil
Plant-Derived
Skin Conditioner
Not Clean
OriginNative to Central Asia, Iran. Derived from the seeds of Juglans regia (walnut), a tree in the Juglandaceae family native to Central Asia and Iran. Extracted through cold-pressing or solvent extraction of the walnut seeds to obtain the oil.
Juglans Regia (Walnut) Seed Oil is a cosmetic ingredient used as skin conditioning. Assessed as safe by the CIR.
Family
Juglandaceae (Walnut family)
Plant Part
Seed
Lifeform
Tree
Climate
Temperate
CAS #
8024-09-7 / 84012-43-1
Form
Oil
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Allergen Warning
⚠️ Tree Nut (Walnut)
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.
Conditions Skin
Antioxidant Protection
Locks In Moisture
Softens & Smooths
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
3
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on0.01–0.2%
Rinse-off0.00003–0.1%
0%50%100%
CIR reported use · report published 2017
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: Kew POWO · CosIng · EWG · CIR