Here at Capillus, we understand that you need to feel confident in your purchases. That's why we have officially begun our 100% satisfaction guarantee. As of June 17, 2016, when you purchase a Capillus laser cap device from our website, you have 6 months to give it a try. If you're not happy with your results, contact us to initiate a return. See our Terms and Conditions page for more details, including contact information.