Essentially a concentrated form of iceflow oil, winterchill is much thicker and gets much colder. Contact with a vial of winterchill inflicts 3d6 cold damage but does not splash if used as a grenade-like weapon. Rogues often use winterchill to freeze locks and then shatter them while they are brittle. If an item is soaked in winterchill, only one-quarter of its hardness is applied against attacks for the next three rounds. One vial of winterchill will freeze a one lock. Creating winterchill requires an Alchemy check (DC 30).
Winterchill: 120 gp per 1-pint flask; 1 lb.