Stucco and Marmorino are types of polished plaster. They are based on calcium oxide and used for interior and exterior wall decorations. They can be finished via multiple techniques for a variety of matte, satin, and glossy final effects. Their waterproofing and antibacterial qualities as well as visual effects have also made it very desirable for luxury bathrooms and other wet areas. Not confined to interior use, it can be seen on the exterior of many buildings to great effect.