Borage, also known as starflower, is an ancient oilseed which has been used in the far-east for thousands of years. The oil is produced from borage seeds, and is one of the richest sources of essential fatty acids. Borage oil can be used both internally and externally. Internally, it can help regulate the hormonal systems, lower blood pressure, and relieve pre-menstrual tension. When used externally, borage oil can relieve unwanted skin conditions.