Why do common household items (shampoo, toothpaste, medicine, etc.) have expiration dates and what happens once the expiration date passes?

Question

Why do common household items (shampoo, toothpaste, medicine, etc.) have expiration dates and what happens once the expiration date passes?

In: Other

Answer 1

I’ve used toothpaste years after its expiration date. If anything it actually worked better. Think the oldest tube I used was maybe 8 years old. Used to know a guy who worked for Crest and had a storage unit full of tooth paste and other Crest things.