Laser penetrates the nail bed and destroys the fungus.
Once a month for 4 treatments is minimum. Depending on the severity of the fungus you could need more. it will take about a year for a brand new healthy nail to come through but usually within a couple treatments you start to see the new clear nail growth.
Come in with nothing on the nail, no polish or creams. Wear sandals or bring extra shoes and socks. Afterwards keep anything that touches your toes clean like the trimmer or files need to be disinfected with anti-fungal products and shoes need to be sprayed daily with anti-fungal spray to ensure you do not re-infect the nail during treatments.