From Pathfinder Treasure Vault (Remastered), which isn't enabled.

Blisterwort

ITEM 11

Price 280 gp

Usage held in 2 hands

Bulk L

Category poison

Activate (manipulate)

This clear, viscous liquid causes lesions and blisters that spread quickly. The victim's pain response increases and flesh breaks easily under physical stress.

Saving Throw DC 30 Fortitude

Maximum Duration 6 rounds

Stage 1 4d6 poison damage and weakness 2 to physical and force damage

Stage 2 5d6 poison damage and weakness 4 to physical and force damage

Stage 3 7d6 poison damage and weakness 6 to physical and force damage

Pathfinder Treasure Vault (Remastered)ORC