Secret Stuff is FrictionLabs answer to liquid chalk. Rub a small amount on your hands, let dry, and a perfect layer of the highest purity Magnesium Carbonate magically appears. Secret Stuff will naturally cleanse and disinfect your hands, killing bacteria and getting rid of gunk and grime that builds up over the course of your normal day and during activity. This unique cream will deliver chalk deep into the texture of your hands - as soon as you use it, you'll see how well it gets into every nook and cranny. A single 75mL bottle of Secret Stuff will last about 100 uses.