If the visor is not coated, you can use furniture polish. Or old fashioned white toothpaste will do the trick.
Use warm water, up to 40 degrees Celsius, with a mild soap solution and a soft brush to clean a plastic visor. Follow by rinsing with clean water and drying in air at room temperature.
Use warm water, up to 40 degrees Celsius, with a mild soap solution and a soft brush to clean a plastic visor. Follow by rinsing with clean water and drying in air at room temperature.