How do you use spray paint properly? Thoroughly clean and prepare the substrate: sand, wipe, degrease and rinse with clear water with a clean and paint-ready support. Be careful to avoid blemishes after coats of paint. The temperature of the support must be between 15° and 22°. Use an underlayer/primer according to the nature of the substrate: PVC, iron, metal, plastic, wood, to strengthen the adhesion of the paint, standardize the color of the support to be covered and improve the durability of the paint over time. Shake vigorously before use for at least 1 min. Apply at a distance of approximately 15 to 25 cm from the surface with a slow and constant horizontal movement. Make 3 passes spaced 20 minutes between each application. Dry to the core in 8 hours. After using the can, plan to invert the spray with the head upside down, to press 2 to 3 seconds on the diffuser in order to clean the spray.