Boostane says their product lasts 2 years. The can I received had no manufactured date, no best if used by date and no expiration date. The can had nothing but it's label and that had no dates on it either. How does one know the product they are receiving has not already expired? You don't know. You have to trust what the folks at Boostane tell you if they even get back to you. For me I contacted them on 5/14 and again on 5/21. They finally responded on 5/22. I returned the can.