The grifolic visor degrades over 30,000 charges of combat, and will revert into a mycelium visor web when fully degraded. A partially degraded visor can be repaired using grifolic flakes - 4 per 1% - which also requires 65 Crafting and some thread, granting a scaled amount of Crafting experience. If it fully degrades, it will need to be re-created from the visor web.