Soon after, Harry himself used it to disguise himself as "Barny Weasley" at Bill Weasley and Fleur Delacour's wedding.The trio used Polyjuice that they stole from Moody to infiltrate the Ministry of Magic to search for Salazar Slytherin's Locket in September of 1997.Before this final ingredient is added, Polyjuice looks like thick, dark mud that bubbles slowly.
You can change age, sex, and race by taking the Polyjuice Potion, but not species." While it can account for both age and gender, Polyjuice Potion cannot be used for a human to take an animal form, nor can it be used on non-humans or half-humans.
Notably, the Polyjuice Potion was used many times in the events leading up to, and during, the Second Wizarding War (and possibly the First Wizarding War, although there are no documented instances of it).
Dolores Umbridge a high-raking Ministry official was in possession of the item.
Harry, Ron, and Hermione disguised themselves as Albert Runcorn, Reginald Cattermole, and Mafalda Hopkirk, respectively.
She went to the Hospital Wing and did not recover until after the winter holidays. To investigate this, Hermione suggested the use of Polyjuice Potion to enable them to take on the form of Slytherin students and question Malfoy.