The Blue shiner block has two different buffer surfaces to help you level, soften and polish nails, removing stains and imperfections. The shiner block uses the nail's natural oils, highlighting their natural and healthy shine. Excellent for finishing manicures, achieving a glass-like, extremely glossy finish without nail polish or top coat. Promotes healthy nails with a glossy effect that lasts for up to two weeks. Also suitable for finishing artificial nails.