Evening primrose oil
AKA “Oenothera biennis oil, EPO, evening primrose seed oil”
Essential Oil
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Ingredient Facts
Evening primrose oil
AKA: Oenothera biennis oil, EPO, Evening primrose seed oil
Essential Oil · Skin Conditioning | Emollient | Antioxidant · EWG: 4
Plant-Derived
Antioxidant
Emollient
Skin Conditioner
Plant Oil
Essential Oil
Clean
Evening primrose seed oil deeply moisturizes and softens skin, helping to maintain a smooth, supple complexion.
Family
Onagraceae
Plant Part
Seed
CAS #
124046-44-2
Form
Oil
Plant-Derived
Botanical. Native to China. Derived from seeds of Oenothera biennis, a plant in the Onagraceae family native to North America and now cultivated in China. Cold-pressed from the dried seeds to extract the oil containing gamma-linolenic acid and other fatty acids.
Plant Source
Onagraceae
Plant Part
Seed
Function
Skin Conditioning | Emollient | Antioxidant
Benefits
Locks In Moisture
Traditional Use
Discovered in the 1980s to contain gamma-linolenic acid (GLA), which supports skin barrier function. Used in traditional herbalism for hormonal balance, with modern skincare applications emerging from nutritional research.
Skin Types
all-skin-types
Best For
Target
Dryness
Melanin-Rich Skin
Suitable
Pregnancy Safe
Caution
Verified Feb 2026
Data: CosIng · EWG · CIR