Speaking for our products, as long as they have the tops/lids snugly on and are out of direct sunlight and prolonged temperatures above 400 degrees, technically hundreds of years with almost no loss in potency. The CBD is locked in there :) The oil of the tincture and the oils & waxes in the salve are amazing preservatives in and of themselves. The tinctures over time will become a little bitter tasting as the chlorophyll in our Full Spectrum CBD Oil naturally breaks down, but that's pretty much it.