Experiment with Chalk

So it dawned on me that the chalk rock-climbers, weight-lifters etc. use might be a simple, non-toxic solution to sweaty hands.

It's basically just magnesium carbonate which has no side effects, it's even a food additive.

To the point: It does dry hands, but only for like 5 minutes. Then I start sweating again, only now it's sort of sticky.

However, I've read that to be truly effective, you need to get it into your pores by mixing it with rubbing alcohol. So I'm going to try making my own liquid chalk. I'll report back when I've done it.

If this doesn't work I'm going to try the homemade iontophoresis machine, or maybe AlCl3.
 
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