Safflower seed oil and flaxseed oil are both vegetable oils rich in unsaturated fatty acids, and there is no argument that one is better. Safflower seed oil is mainly composed of linoleic acid (73% linoleic acid, 21% oleic acid, 6% saturated fatty acids). The main component of flaxseed oil (also known as caraway oil) is alpha-linolenic acid (49% alpha-linolenic acid, 14% linoleic acid, 22% oleic acid, 13% saturated fatty acids). Linoleic acid and α-linolenic acid are essential fatty acids, of which α-linolenic acid is the precursor substance of EPA and DHA, which helps the development of the brain and retina. Safflower seed oil and flaxseed oil are both high-end vegetable oils, because they are rich in unsaturated fatty acids, so it is best to keep them at low temperatures to reduce contact with air, and eat them as soon as possible after opening the lid. It is recommended that different varieties of cooking oils be used in rotation so that different types of fatty acids can be consumed and different health benefits can be realized.