BP's shelf life doesn't matter whether it's opened or not. It's still got an expiration date.

Cleanser and jojoba you can use for years as long as you store them in a cool and dry place.

Moisturizer and AHA also don't have a specific expiration date, but to make sure you're using fresh stuff, I would give them a max of about 3 years. Again, doesn't matter if they were opened or not.