Evening primrose oil
AKA “Oenothera biennis oil, EPO, evening primrose seed oil”
Oil
Ingredient Facts
Evening primrose oil
AKA: Oenothera biennis oil, EPO, Evening primrose seed oil
Oil · Emollient · EWG: 4
Plant-Derived
Emollient
Skin Conditioner
Plant Oil
Not Clean
Evening Primrose Oil Decyl Esters is the complex mixture formed from the transesterification of Evening Primrose (Oenothera Biennis) seed oil with decanol
Family
Onagraceae
Plant Part
Seed
CAS #
124046-44-2
Form
Oil
See origin →
Functions
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
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
Dryness
Pregnancy & Breastfeeding Safe
Caution
Verified Jun 2026
Data: CosIng · EWG · CIR