I tried this Ceoerty FungiGuard Nail Laser Therapy Device because my nails have been yellow and brittle for a long time. This device, with the help of the treatment pen has amazingly cleared my fungal nails up to a natural white again. Im already comfortable showing my nails now even without nail polish! I highly recommend you give it a try. Myrtle Smith, New York Ive tried many products to clear up my nail fungus. I even had the nail removed but after it grew back, the fungus returned. I am happy to have found Ceoerty FungiGuard Nail Laser Therapy Device which really cleared my nails and brought it back to its healthiest state. Great device! Highly recommended to those who are suffering from nail fungus. Kathyrn Fulton, Canada Unlike traditional lasers, our advanced infrared cold laser works gently and effectively against fungal infections without generating excessive heat. This means a painless and safe treatment process that does not harm the surrounding nail or skin. Infrared cold laser technology Instant nail repair pen included Portable and compact design Painless and non-invasive treatment Suitable for toenail and fingernail fungus Visible results within a few weeks No side effects or discomfort Safe for all ages Practical for home use Improved nail strength and appearance How to use: Product Details: Ceoerty FungiGuard Nail Laser Therapy Device