Chalk (climbing)

Chalk in climbing is a powdered magnesium substance used to absorb sweat from the hands, improving grip condition on holds and preventing slipping. Climbers typically apply chalk to their palms and fingers before or during a climb to maintain better control and reduce moisture-related slipperiness. It enhances safety and performance, especially on challenging routes. Chalk does not provide extra strength but helps climbers maintain consistent grip by keeping their hands dry, which is essential for safe and effective climbing.