Kotex products do not typically have expiration dates in the traditional sense as seen with food items or medications. Instead, they are designed to be effective for a considerable period when stored correctly. The materials used in menstrual products, such as absorbent cores and backing materials, remain reliable as long as they are kept in a cool, dry place and stored in their original packaging. However, it is important to note that over time, the performance of products may be compromised due to factors such as humidity or prolonged exposure to air. Kotex recommends checking the packaging for any specific date or recommendations provided. If you have questions regarding the safety or effectiveness of older products, you may want to consult the information available on the official Kotex website for further guidance.