Juglans regia (Walnut) seed oil

Juglans regia (Walnut) seed oil 1
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Juglans regia (Walnut) seed oil 7
AKA: Persian walnut, Walnut Seed Oil
Allergen Warning
⚠️ Tree Nut (Walnut)
Plant-Derived
Skin Conditioner
Not Clean
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
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
Traditional Use
Used in traditional European and Asian medicine for centuries as a nutritive oil for skin health; walnut has been valued since ancient Roman times for both culinary and cosmetic applications, particularly for its emollient properties.
EWG
3
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
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: Kew POWO · CosIng · EWG · CIR