What it is: A kit to turn your nails into chalkboard-style fashion statements. What it does: Hate the sound of nails on a chalkboard? Switch it around by turning your nails into chalkboards. What will your nails say about you? Release your inner child and doodle with your choice of Chalk Pen on a base of black matte polish for a cute classroom look. The Chalk Pens have been cleverly formulated as water-soluble, allowing water to wash them away. The Mattnificent top coat seals the chalk onto the nail.