You can find Glow Dust in Elder Scrolls IV: Oblivion in several ways:
- Buy from Vendors:
The easiest way is to purchase Glow Dust from alchemy shops in the Imperial City Market District. Notable vendors include Ogier Georick at The Main Ingredient and Claudette Perrick at The Gilded Carafe. Another vendor is Calindil at the Mystic Emporium, but you need a higher Mercantile skill to buy from him. These vendors restock their Glow Dust inventory roughly every 48-73 hours in-game
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Kill Will-o-the-Wisps:
Will-o-the-Wisps are ghostly enemies that drop Glow Dust with nearly 100% chance. They are found in various locations:- Near Azura’s Shrine (especially during the "Blood of the Daedra" quest)
- Swampy or marshy regions, such as south of Imperial City along the Niben River or near Leyawiin’s Blackwood region
- Monster dungeons like Crayfish Cave, Breakneck Cave, Wind Cave, Bramblepoint Cave, and Arrowshaft Cavern
Note that Will-o-the-Wisps are resistant to physical attacks and require magic, enchanted weapons, silver, or Daedric weapons to kill effectively
- One-time Free Glow Dust:
A single Glow Dust sample can be found in the Bruma Mages Guild living quarters early in the game
In summary, the fastest and most reliable method is buying Glow Dust from alchemy shops in the Imperial City Market District, but if you prefer combat, hunting Will-o-the-Wisps in the listed locations is effective once you have the right weapons or spells
