Chalk-Tique Powder Additive will not change the color of any paint and no sanding or priming is required. Once Chalk-Tique is added to paint, it will not change the shelf life of the paint - so you can use it again and again! Most pieces require only one coat. Each Chalk-Tique Powder Additive 4 ounce jars contains two (2) cups of powder additive, enough to make two (2) quarts of chalk-style paint.