C60 in olive oil mixtures are photosensitive and exposure to light sources should be minimized.

For short term storage, i.e; while a bottle is being consumed,  a kitchen cupboard or drawer is ideal,

For longer term storage, a bottle can be placed in a refrigerator.  The mixture will congeal while being at the lower temperature but will return to normal a few hours after removal.  Giving the bottle a few shakes may be needed to remix the contents.