While cleaning your bathroom's acrylic bath and shower enclosure, you might notice some scratches on the acrylic's surface. If you try to "clean" the scratches off with a non-abrasive cleaner, you will find that doesn't work. To remove scratches from acrylic bath and shower enclosures, you need to use a wax or polish that can buff the scratches out. Non-abrasive cleaners will only remove dirt and grime from the scratch and not the scratch itself.
Fill a bucket with one half gallon of warm water and one tbsp. of a non-abrasive cleaner or cleaner designed for acrylic. Wear latex gloves to keep your hands from getting wet. Stir the soap mixture with a scrub brush.
Dip a non-abrasive cloth in the soap mixture. Wring out excess mixture. Wipe the scratch and the area around the scratch with the soap mixture-soaked cloth.
Dry the acrylic bath and shower enclosure by blotting it with a clean, dry, soft cloth.
Apply a tablespoon of metal polish or car wax to a dry, non-abrasive cloth.
Rub the scratch with the cloth soaked with the metal polish or car wax. Work slowly and cover the entire scratch with the polish or wax.
Reapply polish or wax to the cloth and continue rubbing the scratch until it is gone.
Sand deep scratches with a 220-grit or higher sandpaper. The higher the grit number, the finer the sandpaper is, and fine sandpaper will result in a smoother surface. Follow steps 4 through 6 to buff the sanded area.