Putrefaction is an uncommon Peerless Reagent that is used in the creation of certain Craftable Artifacts. It spawns on the corpses of Peerless monsters. There are two subtypes: reagents that only spawn on a specific peerless boss, and ones that can spawn on every peerless boss. Putrefaction is of the later type.

Putrefaction is used along with other ingredients to create the following items:

Faerie Fire Faerie Fire
Ironwood Crown Ironwood Crown
Luminous Rune Blade Luminous Rune Blade
Mischief Maker Mischief Maker
Phantom Staff Phantom Staff
Rune Carving Knife Rune Carving Knife
Spell Woven Britches Spell Woven Britches
Darkwood Gauntlets Darkwood Gauntlets
Darkwood Leggings Darkwood Leggings