How do we know/find the exact expiration date of products?

Question

Edit: I don’t mean how the consumers know when the product has expired but how those who create the products also create the expiration dates that we see written.

In: 1

Answer 1

There have been numerous studies done regarding shelf life of products under different conditions. Producers know when a product will start to spoil when stored under appropriate conditions. There are also [FDA guidelines](https://www.fda.gov/drugs/pharmaceutical-quality-resources/expiration-dates-questions-and-answers) that say how long a product can stay on the shelf before becoming dangerous to consume.