As far as I remember I got mine when I ordered some stuff from liftinglarge but I like it. I prefer it over normal chalk.
Don't recall the brand name, though.
Hey, maybe it would be a good idea to sell that stuff on this site, too
Good grip can Improve your deadlift better than any supplement I guess haha.
P.S: Why don't you just look in some outdoor/climbing store in your town. I think many sell liquid chalk, too.