From LSWiki

Ash Resistance is DEAD! R.I.P. It isn't here anymore. Don't bother looking for it in-game.

Class: Resistance Skills
Attribute: Vitality
Pedagogy: Body Alteration
Practitioner Term: Ash Resistor
Hidden Skill

This skill represents the conditioning of one's body to resist being damaged by the amalgam ash and essences that partake of its
nature.

Ash resistance can be increased by exposure to ash damage, changing more quickly according to one's somatic adaptability.  It will
decay over time, weakening more quickly according to one's somatic adaptability.

See Also: ash affinity

Trainers

Temple of Discordia: Erasmus
Association:
Guild:
Quest: