The Miracle-Mineral-Supplement bottle says keep out of direct sunlight
There is no need to keep it in a fridge as far as I know
It is best to keep it somewhere dark

see this thread


//www.curezone.org/forums/fm.asp?i=1097638#i

Keeping it in a cool, dark place is all that is required. Jim Humble says that even the refrigerator light can have an effect on the potency. If you are uncomfortable with your "cool, dark" places, you could wrap the bottle in aluminum foil, to keep the contents dark, and keep it in the refrigerator.