How does GFOUK MedicWave Thermal Laser Joint Care Pen Works? GFOUK MedicWave Thermal Laser Joint Care Pen emits low-level light energy, often in the red or near-infrared spectrum. These wavelengths are chosen because they have the ability to penetrate the skin and reach deeper tissues. One of the key benefits of thermal laser therapy is its anti-inflammatory effects. It can help reduce inflammation in the targeted area, which is particularly beneficial for joint conditions associated with inflammation, such as arthritis. 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.