From Pathfinder #163: Ruins of Gauntlight, which isn't enabled.

Skeptic's Elixir (Greater)

ITEM 11

UNCOMMON ALCHEMICAL CONSUMABLE ELIXIR

Price 300 gp

Usage held in 1 hand

Bulk L

Category elixir

Duration 1 hour

Activate Interact

This elixir sharpens your mind and allows you to see through lies, falsehoods, and magical trickery. You gain a +3 item bonus to Perception checks and Perception DCs to notice falsehoods, whether they're spoken lies or written deceit. You gain this same item bonus to Will saves.

Effect: Skeptic's Elixir (Greater)

Pathfinder #163: Ruins of GauntlightOGL