Starflower Oil is a rich natural source of Gamma Linolenic Acid GLA & contains more than twice the level of GLA found in Evening Primrose Oil. GLA is important in helping to maintain the hormone balance which regulates & controls important body functions including the menstrual cycle. Many women like to take the supplement around the time of their period. Starflower Oil may benefit those suffering from premenstrual syndrome PMS eczema & other skin disorders cholesterol & blood pr