When you create an elixir as an herbal item, you can prepare it as a poultice instead.
Archetype
Feat type
Archetype Feat
Level
4
Traits
Archetype
Prerequisites
Herbalist Dedication
When you create an elixir as an herbal item, you can prepare it as a poultice instead. A poultice gains the oil trait (but remains alchemical, not magical) and loses the elixir trait. You can apply a poultice by Interacting with one hand. When you apply a poultice, in addition to the item's normal effects, the recipient can attempt an immediate flat check to recover from a single source of persistent acid, bleed, or fire damage, with the DC reduction from appropriate assistance.
Source: Pathfinder Player Core 2, p. 202
Bring Poultice Preparation into a Pathfinder 2e game with The DM Screen.