Resin, rosin, pof. Whatever you call it, it's widely accepted that we should NOT use it while climbing. It's said to ruin holds - both indoors and out. Now it might be in your chalk. Block, liquid, and powder. 

This is a public service announcement. 

Learn more about the science of climbing on Breaking Beta.

Read more about pof and rosin usage:

UK Climbing Forum

To Pof or Not To Pof?

UK Bergzeit Journal

Why Climbers Started Using Chalk

Removing Rosin from Liquid Chalk

We don't tweet. We scream like eagles.

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