Hydrogenated Evening Primrose Oil
AKA: Hydrogenated Oenothera Biennis Oil
Plant-Derived
Emollient
Skin Conditioner
Hair Care
Plant Oil
Not Clean
Hydrogenated Evening Primrose Oil is the end-product of the controlled hydrogenation of Oenothero Biennis (Evening Primrose) Oil
Effective at 30.0%
Family
Onagraceae
Plant Part
Seed
CAS #
-
Form
Oil
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
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
Evening primrose oil has been used since the 1500s in traditional European medicine, particularly for hormonal and skin health. The hydrogenated form was developed in the 20th century to stabilize the oil's omega-6 fatty acids for cosmetic use.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.0005%
60.0%
0%84%
Reported use
CIR reported use: 0.3-4 | 0.001-3 | 0.01-15 | 0.0005-60 | 0.06-3
Regulatory Agencies
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: CosIng · EWG · CIR