Liquid Chalk offers dust-free usage because it is applied to the hands in liquid form. In addition, Liquid Chalk offers the best grip, which is why it is mostly used for Basics, Weighted Calisthenics and Statics. Powder and blocks, on the other hand, are mostly used outdoors, by freestyle athletes or for bouldering, as it effectively absorbs the sweat of the hands without sticking too much. Which chalk is right for you depends on your preferences and training.