You better get a dump truck load of toothpaste for every scratch you will be getting.(lol)hahah i just found this has anyone tried it?
How to remove scratches from lexan
remove the windshield
trickle running water across the visor to keep it constantly wet. Wash off light dirt using just water and a soft rag. Soaps may create a haze of small scratches.
Squeeze a small amount of toothpaste (mild type) onto a soft t-shirt type rag. The amount should be just enough to cover the end of the index finger.
Move the toothpaste lightly against the scratch (side to side motion). The light abrasives in the toothpaste will reduce the size of the scratch by making smaller (less visible) scratches.
Rinse and check the visor frequently to note the results of the effort.
Dry with a soft dry cloth. (do not use paper towels.)