And just in case some of you can't view the video here are the steps:
1) With a nail buffer, start with the roughest grit. Each buffer has its flavour di jour so it depends on which one you have. Most have a number sequence and that really helps out. Only focus on the piece where the polish chipped off for now. Make sure there are no rough edges left or pieces lifting. -- Wash your hands.
2) Apply your favorite base coat to the area you buffed. Its alright if you overlap the base coat a little bit over the regular polish. This will help 'seal' in the ridges.
3) Dab in the polish in place. Again, its alright to over lap slightly. Make sure to carry the polish over the overhang of the nail to seal it properly.
4) Apply topcoat to the WHOLE nail.