Orivelle offers a 30-day money-back guarantee. That is shorter than the 60- and 90-day guarantees some competitors offer, and I will be honest: I would prefer a longer one. But here is what the 30 days actually measures for this kind of treatment.
At the 30-day mark, you will have visible evidence of whether the mechanism is working on you. You will see the junction — the clean line at the base where new nail is coming in underneath the old damaged growth. If that junction is not there by the end of the month, contact Orivelle. Keep the pen. Ask for the refund.