Patch and prime in one easy step. Dries fast with no need to sand or prime Let's you paint in minutes for a virtually invisible repair Ideal for repairing holes, cracks and dents in drywall, plaster, wood and stucco. For both interior and exterior use. Advanced Microsphere Technology provides an ultra-smooth surface for painting resulting in exceptional hiding of the repair with no change in paint sheen. Easy, smooth one strike application for a clean fill that doesn't pull away from the edge or leave a messy residue that has to be sanded off. Spackling stays on the putty knife for easy application. Won't shrink or crack. Low odor & low VOC Content*. *Per CA Air Resource Board Test Method 310.