Toadskin SalveConsumable 3
Source Pathfinder Lost Omens: The Grand Bazaar
Price 10 gp
Weight light
This thick, oily salve reacts with the air to exude a toxic mucus when applied to skin. Once it's applied, you can activate the salve in one of the two ways detailed below. After either reaction has been used, the remaining mucus loses its reactive properties and falls away as the effect ends. You can only have one dose applied at a time. If you don't use either reaction, after 10 minutes, the mucus flakes away and the effect ends.
Activate 
Interact
Trigger You hit a creature with a melee Strike
Effect You fling mucus on the creature, dealing 1d4 Persistent Poison Damage.
Activate Interact
Trigger You are hit with a melee attack that deals physical damage
Effect The mucus dulls the blow, granting you resistance 3 to physical damage against the triggering attack.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
AlchemicalAlchemical items are powered by reactions of alchemical reagents. Alchemical items aren't magical and don't radiate a magical aura.
ConsumableAn item with this trait can be used only once. Unless stated otherwise, it's destroyed after activation. Consumable items include alchemical items and magical consumables such as scrolls and talismans. When a character creates consumable items, they can make them in batches of four.
PoisonAn effect with this trait delivers a poison or deals poison damage. An item with this trait is poisonous and might cause an affliction.