* Small Portable, Easily Washable, Indefinite Duration (Eternal) * Eternal lasting abrasive file indicated for the early stages of the application of Nail Gel and in particular, the Prepstone File, is also used for the preparation of the nail in the phases of Application of the semi-permanent nail polish. * How to use: use the Preparation File with circular movements going to roughen the nail surface, ensuring an excellent base to make our color adhere to the best semi-permanent or tinted gel.