required undercoat or enhancer: Silver Common use as enhancer/ undercoat for extra brightness purpose Undercoat for bright color, Metallic color and etc. Note: Surface drying: 15 minutes(after each last coat of each color, wait for at least 15 minutes to dry before applying the next color) or longer depending on weather conditions Do not spray paint during raining day or night time. Do not spray paint directly under the sun. Best to install after 3-7 day curing time Polish or wax must be 1 – 2 week after finish spray painted.