To Shape: Use white surface for heavy duty filing, and shaping and light lavender for finishing. Always file gently from outside in. Do not use sawing motion. For toenails, always cut nails straight across and use file only to smooth rough edges.
To Polish: Use purple surface to smooth out ridges on nail surface, and pink surface to buff and shine. Apply gentle back and forth motion. To avoid drying out the nail, do not buff more than every two weeks. Use shine surface as often as desired.