Secret StuffA(R) is an isopropyl alcohol-based liquid chalk. Rub a small amount on your hands, let dry, and a perfect layer of the highest purity magnesium chloride magically appears-and lasts. With less dust and mess, it&';s the perfect "clean" alternative to loose chalk. Plus, Secret Stuff goes further than regular chalk-it also cleans your hands, getting rid of gunk and grime that can build up while you&';re working up a sweat. Product Details Your potential is in your hands. We have the most fun when we&';re consistently performing at our best. Originally developed to meet the demands of rock climbers, FrictionLabs chalk products are used and trusted by top athletes in all sports that require dependable, long-lasting grip. This isn&';t the generic chalk from China you&';re used to using. Stripped of all unnecessary fillers and responsibly refined in Denver, Colorado, FrictionLabs high purity magnesium carbonate provides unrivaled moisture absorption in a single application and is great for all skin types. Since 2013, we&';ve helped thousands of athletes find a chalk they can rely on for every move. Better performance = more fun.