Treatment discolored nails. Instantly reduces the discoloration of the fingernails. Perfect nails in 4 applications. Treatment in 3 easy steps: The Lima removes excess keratin and stains from the surface. The gel reduces the excess protein keratin of the nail (Urea) and improves its flexibility and strength (Pantenol). The Base trim gets tough, protects and gives gloss to the nail. Nails looking healthy and shiny from the initial application.