[ it's an odd thing to see sam winchester possessed of a superhuman ability, sans the overwhelming power he'd commanded years before, but more the whispering beginnings of it. they've come a long way from The Boy With The Demon Blood and casually tossing around the word 'abomination'. he thinks back on a younger, headstrong, more reckless sam. then, the sam that threw himself into the pit to save humanity, and his big brother. cas had been a much different person then too, it's been a long road. a flicker of a smile flashes on his lips, sparing a moment to be proud of sam and the man he's become, how much he's grown. he'd missed him, over the last few weeks. ]

Then it's fortunate the cold isn't too intense yet.

[ lucifer levels of insta-ice would certainly be useful, but not if sam has to wait for the frostbite to heal in between uses. neither cas or dean's powers could do much for that, here. ]

Still, I'd be cautious subjecting your body to sustained cold for too long. [ just a note of mild concern. he's watched winchesters do enough stupid, self-destructive crap to consider it not completely out of the realm of possibility that sam could make himself sick trying to train a power. now, cas does actually touch the surface of the bottle to the side of sam's fingers, testing the temperature curiously. ] Does it work through gloves?