Magnesium chalk is the perfect example of how rock climbing becomes much simpler by eliminating palm sweat. The absence of moisture improves friction, making climbing significantly easier.

It comes in several forms:
- Loose powder: Easy to refill but tends to spill easily from chalk bags. Sold in bags or jars.
- Chalk ball: Reduces waste, is cleaner, spill-proof and lasts longer. Essentially powder enclosed in a fine mesh.
- Liquid chalk: Applied directly to hands before climbing. Dries to form a film with the same effect as powder.
- Chalk block: Compressed magnesium powder that crumbles when pressed.
Carrying it while climbing is effortless. Simply attach it securely to your waist for quick access. Fumbling for your chalk bag mid-climb is the last thing you want when you're high up. Pro tip: larger bags have wider openings for easier access, though they're slightly heavier.

Magnesium chalk is particularly useful for bouldering. Climbers often use it to mark routes beforehand, making ascents considerably easier.
When using chalk, take care around sensitive areas like eyes, nose and mouth, as it absorbs moisture and may cause allergic reactions in some cases.
Never forget this essential item for more comfortable climbing.