Precautions for flaxseed oil: (1) Flaxseed oil contains more unsaturated fatty acids, so it is not suitable for high-temperature heating to avoid the loss of nutrients; (2) Flaxseed oil can be stored for two years under sealed storage, but it is recommended to eat it within two months after opening the bottle. Unsaturated fatty acids are also easy to oxidize at room temperature; (3) Flaxseed oil is afraid of light, so it is not suitable to be placed in a place with strong light, let alone directly exposed to the sun.