Flax oil is a natural reservoir for the omega-3 fatty acid alpha-linolenic acid (ALA). ALA is considered an essential fatty acid because the body cannot make it from other fats and must obtain it from the diet. Flax oil has been shown to support cardiovascular health and to promote the maintenance of healthy skin. It also abounds in lignans, which are phenolic compounds that may contribute to ALA’s role in maintaining cardiovascular health.