Thanks for the answer.

Good to hear that room temperature will suffice! I've read some more or less doomsday comments of how the oil must have the exact right temperature or else it will lose most of it's effect or something, so this is good news.

(It makes it much more convenient for me as well to just store it in a cupboard and not have to open the hatchway to the cellar everyday)

The bottle is (judging based on pictures) green (unlike their non-organic version that was in a small dark bottle which I had previously) but I think I might use the old bottle as a refill bottle and keep the big one in a plastic bag in a cupboard so it won't matter, the darkness will be sufficient.