From Pathfinder Lost Omens The Grand Bazaar, which isn't enabled.

Stanching (Major)

ITEM 13

Price 2500 gp

Usage etched onto armor

Bulk —

These symbols close bloody wounds. Armor with this rune reduces the DC of the flat check to end persistent bleed damage from 15 to 8 (3 with particularly effective assistance).

Pathfinder Lost Omens The Grand BazaarOGL