Purification Powder is used to turn Ebonstone into normal Stone, clear Corruption and Crimson by turning corrupted grass to normal Grass, and to change Ebonsand into normal Sand. As of version 1.3, it is also used to obtain the Tax Collector by using it on the Tortured Soul. It is sprinkled in the direction of the mouse cursor. Purification Powder could be considered one of the most efficient ways to mine through corrupted blocks without high-grade equipment. It's one of various other ways you can mine through Chasms along with Dynamite, and the Nightmare Pickaxe or higher.