Some consumer products like minoxidil are required by the FDA to have an expiration date. An expiration date shows the date that the company maintains stability testing to ensure the product meets quality and performance standards. When a product indicates a month of expiration, for example the carton indicates 06/16 as the expiration date, the product can be safely used until the last day of that month. Because product stability and performance are not assessed after the expiration date, it is recommended for consumers to discontinue using the product and discard any remaining product.