What are some things that expire?

Many items have expiration dates, including food products like dairy, meat, and fresh produce, which can spoil and become unsafe to consume. Pharmaceuticals, such as over-the-counter and prescription medications, also have expiration dates that indicate their effectiveness may diminish over time. Additionally, cosmetics and skincare products can lose potency or become harmful after their expiration dates. Lastly, certain batteries and perishable items like contact lenses have specific lifespans beyond which they should not be used.