Repellentien

Repellentien is a fictional substance featured in the "Harry Potter" series by J.K. Rowling. It is a repellent that is used to keep away various creatures, including Dementors, which are known for their ability to drain happiness and cause pain. The repellent is typically applied to clothing or other items that the wearer or user will come into contact with. It is mentioned in the series as a protective measure against the Dementors' harmful effects, particularly in the context of the Hogwarts Express and the journey through the Hogwarts Express platform. The exact composition and effectiveness of Repellentien are not detailed in the series, but it is implied to be a powerful and reliable deterrent against the Dementors' influence.