The CBD oil products generally have a shelf life of at least one year, if stored in a cool, dark place. Refrigeration is typically not necessary as long as it is kept somewhere where the temperature is less than 77 degrees Fahrenheit. Tinctures that use MCT coconut oil as the carrier oil are known to have a longer shelf life than those with hemp seed oil as the carrier oil.
How to vape CBD oil is up to you, but remember that effects are stronger as a concentration of cannabidiol rises. Vaping CBD oil is nothing special and unlike nicotine, users of CBD vape oils work their way up instead of the opposite. Vape oil on itself is safe and there is a lot of scientific evidence that clearly demonstrates that CBD oil for vaping has genuinely nothing to do with getting high.