Medea Nail-Art Colors Varnish is a clear coating that may be used prior to applying Medea Wet Glaze Top Coat. This extra layer makes the Wet Glaze Top Coat go on smoother. Medea Nail-Art Colors are non-toxic, water-based acrylic paints for spray-on or paint-on application. The colors may be applied over a fingernail base coat and then sealed with a fingernail top coat. Medea Nail-Art Colors clean up with Medea Airbrush Cleaner. Once sealed with the top coat, they can be removed with finernail polish remover.