FrictionLabs is a US based climbing chalk company currently boasting to have manufactured the highest purity of magnesium carbonate chalk on the market. “Why is this so great?!”I hear you ask. Well, chalk is a combination of magnesium carbonate and calcium carbonate. The former traps moisture, leaving surfaces dry and the latter attaches water to the outside of the molecule, leaving surfaces moist. It is claimed by the team at FrictionLabs that this makes their chalk last longer, safer to inhale and is less likely to dry out the skin.