◕
Lister's oil
Lister's oil is a substance with antiseptic properties on Roshar.[1]
Lirin uses it extensively in his surgery, including on Sani's injury.[1] It is rather expensive on the Shattered Plains, costing two sapphire marks per bottle from the apothecary Kaladin visits.[2] It is used in the hospitals in Kharbranth.[3]
The name seems to refer to Joseph Lister, out of universe. He was an early pioneer of antiseptics and introduced phenol to sterilize wounds and surgical implements.