Liquid chalk
The term liquid chalk, or sharkchalk, refers to several different kinds of chalk: Despite the term, some forms of "liquid chalk" contain no actual chalk. Sports. Liquid chalk can be a variation of normal chalk (see: magnesium carbonate) used to improve grip for sports, such as rock climbing, weight lifting, or gymnastics. Rock climbing. Rock climbers use liquid chalk to prevent their hands from sweating. It may be used by climbers in situations where powdered chalk is restricted. It is preferred by athletes because it remains effective longer and leaves less residue on rocks and equipment. Liquid chalk  for rock climbers is made from magnesium carbonate. Since liquid chalk does not leave a white residue, it is an environmentally friendly alternative. In five forms of climbing, liquid chalk may prove more useful than powdered chalk. Other sports. In other sports, liquid chalk is less beneficial to the athlete, because re-chalking can be done more easily between sets or rounds. However, some gyms require liquid chalk because it leaves less residue on gym equipment. Liquid chalk adheres to the hand better, reducing the need to re-chalk. Ingredients. Some liquid-chalk mixtures for climbing are made with magnesium  carbonate, colophony, and ethanol or an alcohol that dissolves the colophony and quickly evaporates from the solution (as isopropyl alcohol or ethanol). Sometimes, an additive for aroma is included because of the bad smell of spirit. Usage. Sports liquid chalk is sold in bottles. The user takes a small amount into their palms, spreading the chalk onto areas that require grip. The liquid evaporates when it comes into contact with the warmth of a user's hand, leaving behind chalk. Alcohol disrupts the bonds between water molecules, reducing the energy needed to cause evaporation.