How should I store this oil to keep it fresh, and how long is it good for after opening?

Proper storage is crucial for maintaining the quality of unrefined flaxseed oil, as its polyunsaturated fats are sensitive to light, heat, and oxygen. To preserve its freshness and prevent it from turning rancid, always keep the bottle tightly closed in a cool, dark place—a pantry or cupboard away from the stove or oven is ideal. For longer-term storage, you can refrigerate it after opening; the oil may become slightly thicker or cloudy when chilled, but this is normal and doesn't affect quality. Once opened, aim to use the oil within a few weeks to a couple of months for the best experience, as exposure to air accelerates oxidation. Using it in smaller, regular amounts rather than saving it for occasional use is often recommended. If you notice an unusually sharp, bitter, or 'paint-like' odor, it's a sign the oil has likely spoiled and should not be consumed.