Get natural, shiny, healthy-looking nails with Avani's professional smooth 3-step nail buffer.  Step 1: Gently smooth the surface of the nail using the course (golden) side of the cube. Step 2: Follow with the black side of the cube to polish perfectly. Step 3: Gloss the polish or your bare nails by buffing with the white side of the cube gently for a few seconds without applying pressure. In just minutes, this magic cube will have your nails smooth and shiny.