The grifolic visor is degrading mid-level magic head armour that requires 60 Defence to wear. It is part of the grifolic armour set. It can be made at level 65 Crafting by sewing 400 grifolic flakes onto a mycelium visor web, granting 40 Crafting experience. Creation (and repair) can be assisted.
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.
The visor can be cleaned at any point to return the mycelium visor web, and half of the remaining charges in grifolic flakes, rounded up - e.g. an 80% charged visor will return 160 flakes. Additionally, alchemy performed on the visor returns a scaling amount of coins based on the remaining charges.