|"There are plenty of eye-witness accounts. Just because you're so narrow-minded you need to have everything shoved under your nose before you–"
This article contains a list of appearances, but currently has few or no notes and references. Please help the Harry Potter Wiki by adding notes and/or references to bring this article to a higher standard of quality.
Instant Darkness Powder was a powder invented by Garvin Lügner in the late 18th century, presumably intended as a variant of Peruvian Instant Darkness Powder. However, unlike the true substance, which provides a darkness so absolute that the Wand-Lighting Charm can barely penetrate it, Garvin's powder merely slightly dimmed the lights. However, this did not discourage Garvin from falsely claiming he had invented the Wand-Lighting Charm to remedy the effects of his powder.
- Wonderbook: Book of Spells (Mentioned only)