Masks
From Destiny 1 Wiki
Masks are cosmetic helmets players can equip to change the look of their face. Rare masks expire after Festival of the Lost while Legendary masks are permanent. Players can upgrade a rare mask into a legendary one using Paper Glue.
Players can obtain random Legendary masks from Treasure of the Lost. They can also exchange an old mask for a new one by filling a Empty Candy Satchel. Players can fill the Satchel by defeating enemies in PvE or PvP while wearing a mask
Types of Masks: