Acrylic-Werks Polish restores the metal wiper arm on a Honda automobile You can use this process on any metal wiper arm, regardless of car model and also ...
The white stuff is usually dried wax. Are the wiper arms smooth or
textured? If smooth, just follow the standard application process and all
the white stuff will go bye-bye, while restoring the arm back to black. If
the arm is textured include the use of a fingernail brush, just like the
process used in the Honda Plastic Bumper restoration video, check it out.
Your arms will look great.