DAP DryDex spackling America s #1 seller contains a patented Dry Time Indicator causing the product to change color when optimum dry time is achieved. It goes on pink and turns white when dry! This unique feature is the signal that it is ready to sand and paint. Easy to use indoors and out on drywall plaster wood and more. No priming is required and this product will not sink or shrink. New selling unit is 8 oz container.