Why does magic mouthwash expire so fast?

Magic mouthwash typically contains active ingredients like anesthetics, antifungals, and steroids, which can degrade over time, leading to reduced effectiveness. Additionally, the presence of water and other compounds can promote microbial growth, making it less safe for use after a certain period. To ensure potency and safety, manufacturers often recommend a short shelf life, usually around 30 days, after which the ingredients may not work as intended. Proper storage can also impact its longevity, but expiration dates should always be followed.