I actually think this is a good question and I had it myself. If the fina is still in the cart, the manufacturer recomends refrigeration.....thats why it is typically shipped with a cold pack. Once converted however, I think it becomes irrelevant. After all, the coversion preocess involves melting the fina and it being suspended in oil (at least with the kit I use) which to my understanding adds some presevitive like properties.