Sorry to take so long in answering, Bill. I went directly to the source; according to the manufacturer, Celox products have been proven to perform to spec for a minimum of three years from the manufacture date. Not bad, I'd say. You may go quite a while without seeing or needing to treat, say, a major high-pressure arterial bleed but most likely a simple band-aid type dressing will see action at some point within that time frame.
I already have a 10 pack of the 2 gram Celox First Aid
granules, and I keep a few in my work first aid kit. I also have some of their Nosebleed Pads
(my dad is on potent blood thinners and gets nosebleeds that routinely land him in the ER). After seeing the awesome effectiveness of the Kyto-Stat bandages and the Nosebleed Pads I ordered an 8 x 8" Hemostatic Celox Gauze
from Amazon. It should offer the same state of the art hemostatic prowess with the ability to cover a broad range of wounds (and burns).
This stuff is amazing!