6What Would Occur When You Use Expired Mouthwash?
Due to the breakdown of active ingredients, it can be harmful and ineffective to use expired mouthwash. This may apply to both cosmetic and therapeutic products even when they still look and smell normally. Therapeutic products are specially made to help with dental issues, such as gingivitis, tooth decay, and plaque. They include many active ingredients like essential oils, hydrogen peroxide, and fluoride. Over time, hydrogen peroxide and fluoride lose the potency, making them less effective in preventing cavities, improving dental health, and whitening the teeth. For essential oils, the shelf life may be even shorter, particularly when they are exposed to environmental factors, such as oxygen, heat, or light. The antiseptic or alcohol may also dissolve and encourage the growth of bacteria. Therefore, using expired mouthwash may increase the risk of infections. [6]
