Rock Technologies Dry 5 Friction Liquid Chalk (250ml)
2 x 250ml bottles together in this order.
Now there's no need to re-chalk during ascents.
Rock Technologies Dry 5 Friction is is an alcohol-based liquid chalk solution which is applied to the hands in a liquid form.
It inhibits sweating from the hands or feet, with no dust and little mess, drying your hands quickly and keeping them dry - enabling you to complete difficult bouldering problems without the need to re chalk during ascents.
(It's also very useful for yoga or aerobics, where slipping on a mat because of sweaty hands can be a problem)