Made in Germany, Polywatch is designed to remove scuffs and scratches from synthetic watch crystals such as plexi-glass. Simply put a small amount of PolyWatch onto the plexi and polish for 2-3 minutes with cotton wool. Remove any residue and give a final polish with a clean cloth. You’ll need to rub quite vigorously for a couple of minutes to remove most scratches. If the scratches are deep, more than one application may be required.
The way Polywatch works is by using tiny abrasive particles within the polish to fractionally dissolve the plastic, the edges of the scratches are smoothed away and the scratch filled with some of the original plastic from the watch crystal. It’s pretty miraculous stuff actually.