Thanks for the criticism! We approached using silica from a different angle: we took a product sold over-the-counter in pharmacies & adapted it to climbing. This means we’re all good in terms of human product safety. The trick essentially is to use an aggregate of silica that has been tested before.
We think the trick to using less chalk is 1) switching to liquid chalk 2) using less chalk powder ... generally speaking liquid chalk uses far less chalk and last longer. Our crystal chalk is an improvement on traditional liquid chalk for those who want to use even less.
UPDATE: check the video I posted on our blog to see the diff between crystal and white chalk. Link in comment replying to OP.
We think the trick to using less chalk is 1) switching to liquid chalk 2) using less chalk powder ... generally speaking liquid chalk uses far less chalk and last longer. Our crystal chalk is an improvement on traditional liquid chalk for those who want to use even less.
UPDATE: check the video I posted on our blog to see the diff between crystal and white chalk. Link in comment replying to OP.