Understanding Expiration Dates for Mouthwash
Unlike food products, the rules for expiration date for mouthwash are quite different. The US Food and Drug Administration is responsible for controlling the expiration dates on any cosmetic products and drugs. If a mouthwash product is used for preventing or treating a condition, it should be tested for safety and required to have an expiration date on the packaging. By looking at this information, you may know how long the ingredients may remain stable and safe to use. After this period, the formula may not be as effective as expected. [3]
