Laser treatment is a relatively new approach for treating fungal nail infections. The treatment involves using a specialized laser that emits a specific wavelength of light that targets the fungus causing the infection. The NailSpeed Light Cure Fungal Nail Pen is absorbed by the fungal cells and converts to heat, which kills the fungus without causing damage to the surrounding healthy tissue. The NailSpeed Light Cure Fungal Nail Pen is also thought to create microscopic holes in the nail plate, which allows the antifungal medication to penetrate deeper into the nail and reach the infection more effectively. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.