Check out the new highly pigmented patented chalk spray paint for fine arts.Indoor as well as outdoor use. For virtually all surfaces. Seal with MOLOTOW™ URBAN FINE-ART UV-Varnish products. If not sealed and when in contact with water or weather influences, application is only temporary. The serie is actually composed of 10 highly pigmented opaque chalk pigment colors for virtually all surfaces. It could removable if not refined but it could also be refined with UV-Varnish.