Borago officinalis Borage seed oil is clear and slightly thick with very little odor. It contains an abundance of gamma linoleic acid (GLA), an essential fatty acid that the body uses to manufacture prostaglandins­­hormone like substances that balance and regulate cellular activity. It reduces the aging process of the skin and reverses damage from ultraviolet rays. This oil is used to treat PMS, endometriosis, and menopausal discomforts, as well as for psoriasis and eczema. It’s not a cooking oil. It may be used at a 10%-15% dilution rate.. SAP value: 188.0.