"Sirius sustained a bad bite from a silver snuffbox; within seconds, his bitten hand had developed an unpleasant crusty covering like a tough brown glove."
— The effects of this powder on the skin[src]

Wartcap powder was a pulverised magical substance which caused the skin of a person who touched it to form a thick hard crust.[1] It could be used in potions such as the Fire Protection Potion.[2]


A biting silver snuffbox in the drawing room inside Number 12 Grimmauld Place was filled with powder from a Wartcap. In August 1995, Sirius Black picked up this box whilst cleaning up 12 Grimmauld Place and got bitten by it, causing his hand to come into contact with wartcap powder. He instantly healed his injured hand and tossed the box aside.[1]


Notes and references

  1. 1.0 1.1 1.2 1.3 Harry Potter and the Order of the Phoenix, Chapter 6 (The Noble and Most Ancient House of Black)
  2. 2.0 2.1 2.2 LEGO Harry Potter: Years 1-4 - Handheld versions
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