The expiry date on the packaging of a product gives the consumer the confidence that the product will retain its identity. content. quality and purity throughout the period of validity of the drug. The definition of this term in the pharmaceutical industry is based on stability data obtained during the product registration. https://www.spidertattooz.com/Antiqued-Brass-Color-Glue-On-Bar-Pin-Back-1-1-4-Inch-32mm-10-Pieces/