How does this Nano Vibration Anti-fungus Skin Repair Device work? It uses natural ore particles and unique magnets to act on hair, sweat glands, fungi in the sebaceous layer, and hair follicles in the dermis. 10,000 nano ore particles and 7 unique magnets are rubbed on the surface of the skin to produce vibration energy. It helps to remove body odor, eliminate skin fungi, remove body hair and slow hair growth without harming hair follicles. 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.