AWO's Pure Evening Primrose Oil Virgin is ACO Certified Organic. Also available in bulk quantities. Botanical Name: Oenothera Biennis. Extracted from the seeds of Evening Primrose flowers, Evening Primrose Oil is rich in essential fatty acids such as GLA (Gamma Linolenic Acid). Due to its high content of GLA, it boasts the ability to help heal and reduce skin inflammation. It is a well-known oil treatment for the alleviation of the symptoms of eczema and psoriasis, helping to reduce itchiness, redness, inflammation, pain and dryness. Evening Primrose Oil is very well suited for dry and mature skin and is known as one of the best oils for anti-ageing. With its high contents of vitamins and other nutrients, it's said to help maintain normal skin function and prevent signs of premature ageing.