Vapes can be used as needed. If you are new to using CBD vapes, begin by taking one or two puffs and waiting ten minutes. Take more if the desired effects are not felt, but only increase your dosage by one or two puffs at a time until you are satisfied. The effects of the CBD should be felt as early as a few minutes after you vape and can last up to 6 hours, depending on your body’s metabolism.