|Madame Glossy's Silver Polish|
Polishes silver objects
It is likely that as a Squib, Hogwarts Caretaker Argus Filch relied on the product quite heavily, since a number of cans of it were kept stored in a broom closet in the school. Rita Skeeter rested her parchment on one of these cans before she interviewed Harry Potter in the broom closet in 1994.
- Harry Potter and the Prisoner of Azkaban (film) (Mentioned on a poster)
- Harry Potter and the Goblet of Fire (film)