Onetime Lighten Up lightweight spackling is a color-change formula that goes on pink and dries white when it is ready to be painted. Pre-mixed formula for fast, professional repairs in just one application. Fills dents, cracks, nail holes and other small holes in interior and exterior surfaces such as drywall, plaster, wood and stucco. Dries fast. Wont shrink or crack. Interior/exterior use. Water clean up No sanding required.