All three of our Secret Stuff® blends provide killer grip with less dust and less mess. If you’re just looking for a high quality liquid chalk, check out our original Secret Stuff blend — it’s 45% isopropyl alcohol-based. If you’re using chalk in particularly dry conditions, or have skin on the dry or sensitive side, try our gel-based, odorless Alcohol-Free Secret Stuff. Our new Secret Stuff Hygienic provides great grip with an added bonus: it’s shown to be just as effective as hand sanitizer in killing germs (including the coronavirus). Just ask the real live scientists at the University of Colorado Anschutz Medical Campus.