Latin Name: Oenothera biennis
Plant Family: Onagraceae
Extraction: Cold pressed seeds
Yellow in colour and oxidizes on exposure to air and light, like borage, the oil is highly unsaturated and is more reactive and less stable than other oils.
Evening Primrose is Native to North America it was introduced to Europe in 1619, native North Americans made an infusion of the seeds to be used for healing wounds.
(Len & Shirley Price: Carrier Oils for Aromatherapy & Massage 4th Edition)
Oral intake not recommended for long periods of time, there are few reports of mild headaches and nausea.