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There are two types of laser treatment that are effective in treating fungal nail infections. Both would require any excessive thickening of the nail to be filed away before treatment began, and in both cases the uninfected nail will grow from the base of the nail to replace the infected portion which would be clipped away as usual from the top. Before and after photographs allow progress to be monitored. Some clinics also take clippings for microscope analysis to monitor the fungal infection.The first type of laser treatments uses laser light typically emitted from Nd:YAG lasers with a wavelength of 1064nm of infra-red light. Examples of such brands of laser include PinPointe from Cynosure and ClearChoice from Alma Lasers.The laser light is applied across the nail in short pulses by a clinician using the handpiece of the laser device. All the affected nails would be treated individually but it is relatively quick, taking about ten minutes to do one hand or foot. The treatment would then be repeated at four week intervals until the infection was gone. There is a mild sensation of discomfort with this treatment but it seems to vary a lot between individuals, their pain threshold and the state of their infection.More recently there are now “cold” laser treatments available such as the Lunula treatment which is often found to be more comfortable for the client. The Lunula uses much lower wavelengths of light – 405nm and 635nm – which means that it is not relying on heat to kill the infection; hence the term cold laser. The whole foot or hand can be treated by placing it into a device that rotates the laser beams over the surface. It uses two wavelengths of light simultaneously; one to treat the fungus, and another to stimulate the blood supply to boost the immune response in that area. The cycle takes about twelve minutes per hand or foot and as the energy is lower there is minimum discomfort to the client.