Ive been to doctors over the years for toenail paronychia on two of my toes, each time giving me a new diagnosis and a new therapy - and none of these expensive treatments have been successful. Now that Im using this phototherapy device, Im feeling better . Its fairly easy to use and seems to dry the paronychia and the nail at the same time. Its one of the only treatments Ive used that has at least somewhat changed the appearance of my nails. Jillian Henderson I used this product 5-6 times the first day I received it and when I woke up the next day I thought I was losing my mind because of the change. The difference in one day was obvious - that Thicker nail was lightened in color; 100% by this device. Im about 7 days into it now and its unbelievable how clear my toe is. It seems to have killed the fungus so my nail can grow. If you use it try it out, use it more often than the instructions say - you will love it! No oil or other ointment, just use this device!!! I only charged it once; I have it on now as I write this review . Hopefully I can wear sandals again in August!!!Timothy Callen The revolutionary, highly efficient AEXZR light therapy device uses blue light therapy in combination with infrared cold laser technology to effectively eliminate fungi, inhibit inflammation and prevent infections. This relieves nail pain and swelling, eliminates pus or pustules, inhibits itching, peeling, thickening of nails and other problems. Blue light therapy is a medical method that uses a specific wavelength of blue light (470 nm) to treat nails. Blue light therapy involves exposing the patients nails to blue light with a wavelength of 470 nanometers, which penetrates the surface layer of the nail and causes a photodynamic response to the keratin in the nail. The photodynamic reaction causes the keratin to combine with oxygen molecules and form toxic oxygen radicals that damage or kill bacteria and fungi around the nail. In addition, blue light has an antibacterial effect and can also reduce inflammation-related infections, relieve redness, heat and pain symptoms at the site of inflammation, and fundamentally repair damage, Infrared cold laser is a medical and rehabilitation technology that uses infrared light generated by infrared lasers to treat pain and promote tissue repair. In general, the wavelength range of the infrared cold laser is between 650 nm and 1000 nm, with the most common wavelengths being 808 nm and 905 nm. Infrared cold laser therapy involves directing infrared light produced by a laser to the area of pain or injury. The infrared light is able to penetrate the deep layers of the skin and penetrate into the internal tissues. This infrared light has biophysical effects in the tissue, which can promote cell metabolism, increase cell energy production, promote blood circulation, completely eliminate inflammation and infection in the paronychia area, and strengthen tissue repair and healing. Package Includes: 1 x AEXZR Revolutionary High Efficiency Light Therapy Device for Toenail Disease