murphyOenothera biennis evening primrose oil
Plant-Derived Synthetic
Emollient
Skin Conditioner
Plant Oil
Extract
Clean
OriginNative to Native to North America, now cultivated worldwide. Derived from seeds of Oenothera biennis (evening primrose), a plant native to North America and cultivated globally. Cold-pressed from the seeds to extract the oil containing gamma-linolenic acid and other fatty acids.
Oenothera Biennis Evening Primrose Oil is a cosmetic ingredient. Rated low hazard by EWG.
CAS #
90028-66-3
Form
Oil
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Caution
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Softens & Smooths
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory0 listings
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe
Pregnancy
Caution
CIR Safety Findings
Not a Skin Irritant
1 study / 1 not irritating (CIR 577)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 577)
Concentration Guide
Leave-on0.00002–58%
Rinse-off0.002–0.2%
0%50%100%
CIR reported use · report published 2017
Regulatory Agencies
Verified Jun 2026
Data: Kew POWO · CosIng · EWG · CIR