* Completely remove dust,water stains,and grease from the painted place.
* Fill and level up the sunken part with putty then polish.
* Before spraying,shake the bottle for about two minutes,and to make the paint fully mixed Evenly.
* Press the valve button with a finger and evenly spray the surface at a distance of 20-30 cm
* By spraying more times, every two minutes to spray a thin layer can get the better effect.
* Invert the bottle after use, and spray the head till gas was sprayed out,clean the spray mouth to avoid blocking mouth.