The purple slayer helmet is a piece of equipment that is worn in the helmet slot. It is a cosmetic upgrade to the slayer helmet.
It can be created by adding a dark claw after purchasing the ability Dark Mantle for 1,000 Slayer reward points from any Slayer master. This is reversible, and the claw will be returned to the inventory along with the slayer helmet’s components. The Dark claws will be lost on death in PVP.