Recipe: Elixir of Ironskin

Recipe: Elixir of Ironskin teaches the Alchemy-made potion Elixir of Ironskin, a Guardian Elixir that increases the drinker's Resilience by 30 for a full hour.

Source
This recipe can be bought at the city of Halaa when your faction possesses the city. It costs Halaa Research Tokens.

The components are:
 * 1 Ancient Lichen
 * 1 Ragveil
 * 1 Crystal Vial