Sally Hansen Hard As Nails Xtreme Wear with the exclusive Micro Shine complex adheres to the proteins in the nail and forms a coating rich in calcium and minerals. This ensures a hard shiny nail polish that lasts up to seven days. Tip: Besides the many colors of nail polish, Sally Hansen also has fine hand care and nail care to put your hands in perfect condition. The basis of a beautiful manicure starts with well-groomed hands and nails.