Evening Primrose Oil (EPO) is a natural oil derived from the seeds of the Evening Primrose plant (Oenothera biennis). Known for its high concentration of gamma-linolenic acid (GLA), an essential omega-6 fatty acid, EPO is not commonly found in everyday foods but plays a crucial role in supporting overall health. This oil has been used for centuries in traditional medicine for a variety of health benefits, particularly in promoting healthy skin and balancing hormones.