GLA Best Emollient Hydration Anti-Ageing GLA description GLA stands for *G*amma *L*inolenic *A*cid, which is a fatty acid used in cosmetics as an emollient and antioxidant. GLA is considered a skin-soothing agent. It’s found in black currant oil or seeds, evening primrose oil, and borage oil. Related ingredients: Gamma Linolenic Acid (GLA) Fatty Acid