Evening primrose oil is obtained from the seed of the beautiful evening primrose plant and is one of the world’s most plentiful sources of GLA (gamma linolenic acid) and LA (linoleic acid Solaray evening primrose oil is squeezed from the seed by a process known as cold pressing No solvents have been used. Involved in regulation of the nervous, cardiovascular, reproductive system and in the state of the skin . The GLA has proven effective especially good on the skin and as a female hormone regulator, contributing to the regulation of the menstrual cycle and reduce the symptoms of menopause and PMS.