[ADD CHALK] The ADD CHALK has been conducted many tests and has been continued to develop the product. High quality and unique formula, it is also extremely compatible with ADDFRICTIONNormal, ADDFRICTIONforWET, and GRIPON to further improve the functionality of each other. Because it is simple, it is highly versatile and useful for a wide range of climbers. ADDCHALK is a powder chalk that is safe to use without any additives other than magnesium carbonate.