Originally Posted by hayabusa
any effect on head retention once you use it in the BK? Does it also carry its effects over into your primary and prevent blowoffs?
I've never had a problem with head retention after using them. From what I understand your head retention will be better than if you did have a boil over/blow off because the proteins are staying in the vessel.
They don't seem to make it over into the fermenter, so I always add a few drops in the fermenter as well