The Rungne Magdust Superdry is a distinct formula from the original Magdust, dialed specifically for the sessions where heat and humidity are working against every hold. The 100% fine powder disperses evenly across the skin and pulls moisture away faster than a coarser blend would, keeping friction consistent from the first move to the crux. What Our Gearhead(R) Experts Are Saying:"I keep this in my bag on humid days when regular chalk turns tacky before the second bolt. The fine powder coats evenly and stays dry through a full redpoint attempt."