Step 1: This is the elimination phase (4 weeks). The surface of the nail should be filed once a week throughout the first week of treatment. - After you've finished using the file, throw it away. - Once a day, apply a thin layer of the liquid solution to the damaged nails. - Repeat the manner of application during the second, third, and fourth weeks. Phase 2 is referred to as the protection phase." - With the last file, smooth off the surface of the nail (discard the file after use). - Apply Liquid Solution to the damaged nails once a week for nine months, or until the discolouration has disappeared completely."