Brick Chalk

A classic brick of chalk is everything a powerlifter needs to eliminate sweat and moisture for a better grip on their barbell.
 
As an added bonus, swipe this brick across your back when you squat for better traction between your shirt and the barbell, and swipe it across your booty for great grip against the bench when you're pressing-- you just can't do that with liquid chalk!
 
Pro-tip: don't put this on your shins! That's where baby powder goes ;)