From the Manufacturer:
Borage oil, also known as starflower oil and borage seed oil, is derived from the seeds of the borage plant (Borago officinalis). It's a rich source of Gamma-Linolenic Acid (GLA), a member of the omega-6 essential fatty acid family.
Essential fatty acids are "essential" because the body needs them for proper formation and function of every cell in the body, but it cannot produce them on its own-they must be obtained through diet. Omega-6 essential fatty acid GLA can be obtained through dietary sources such as organ meats or certain seed oils including borage, primrose, black currant and hemp. Borage oil contains the highest percentage of GLA among the seed oils.