As they quickly dry out and become like stones, you can keep them at least for a year. Just try to keep them dark, as too much light (especially direct sunlight) can destroy the ingridients :)
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As they quickly dry out and become like stones, you can keep them at least for a year. Just try to keep them dark, as too much light (especially direct sunlight) can destroy the ingridients :)
Thanks for the information dear friend