When exposed to moisture, Magnesium Carbonate traps water molecules on the inside of its crystalline structure, leaving the surface dry.
Calcium Carbonate attaches water to the outside of its structure, causing the surface to feel moist and slimy. Not a good characteristic for grip.
All climbing chalks market themselves as Magnesium Carbonate, because that's what dries moisture the best. They mislead you in to thinking it's only Magnesium Carbonate when the truth is that they all have significant amounts of Calcium Carbonate and other fillers. Calcium Carbonate - the same stuff as chalk board chalk - just gets slimy when mixed with moisture. When you sweat, keeping your hands dry depends on having chalk that has high amounts of Magnesium Carbonate and low amounts of Calcium Carbonate. We had an independent lab test our chalk against the most popular options to see what they're made of.
The results are clear: FrictionLabs has the best chalk for rock climbing! See the data for yourself!
Chalks tested include Bison Ball, Metolius Super Chalk, Evolv, and Metolius Block
We use a proprietary process to create high performance chalk with an extremely high Mg:Ca ratio. And because climbers have different texture preferences, we make our chalk into 3 distinct blends:
If you want dry hands, you want FrictionLabs chalk. To make sure you never run out of the good stuff, we'll automatically ship you your preferred blend every month. Pause or cancel anytime, no strings attached.
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