Crackle glaze provides an aged or modern crackled effect in one easy step. It is easier to use and less expensive than other, two-step crackle products. You can antique with One Step for an old world effect or color wash with it for a newer, trendier look. One Step's crackle effect can be controlled by the thickness of application.It dries best in 2-4 hours. Paint the acrylic coats in the same direction and crackling glaze in the opposite direction for best result. For finishing sprey varnish is recommended. Non toxic.