Testing that right now. Have had a 10ml bottle in the freezer for a couple of days (it doesn't freeze solid, just gets thicker) - then put it in the fridge for a week; and yesterday I moved it to a warm room. Will see if it turns green or anything over the next few weeks (of course it's nice and thin again now... viscosity changes with temperature both ways back and forth no problem).Would freezing them be bad?
Took some drops to smoke and seemed perfectly normal.
I'll post it if anything unusual seems to happen - but so far so good.