Wait until the first coat of Chalk Paint™ Wax is dry to the touch (which will take about an hour, depending on environmental factors and the thickness of the first coat) before applying a second coat. Cleaning care: clean with a damp cloth. For stubborn marks, use a cleaning spray and renew the wax as necessary. Chalk Paint™ wax is not suitable for outdoor use. Use Chalk Paint™ lacquer for outdoor items.