MELBOURNE, Australia: The value of mouthwash as part of routine oral hygiene has often been questioned in the literature. Seeking to provide the most current data on the role of mouthwash in oral care, FDI World Dental Federation has curated a topic-specific International Dental Journal supplement that includes six peer-reviewed articles looking at the effectiveness of mouthwash in managing oral disease, the effect of mouthwash on the oral microbiome and on systemic disease, and alternatives to mouthwash and its potential future development.