Watches take a lot of abuse, especially if worn daily. Most watch faces are made of plastic and can scratch easily. Deep scratches should be buffed out by a jeweller, but minor scratches can be removed at home with a little effort and items you may already have in the house.
Squeeze a dab of plain white toothpaste on a clean, dry jeweller's cloth.
Rub cloth, toothpaste side down, over the scratched surface in small circular patterns for about five minutes. Be sure to cover all scratched surfaces. The toothpaste acts as a mild abrasive, buffing the surface of the watch face.
Dampen a second jeweller's cloth with water and use it to clean the surface of the watch.
Repeat steps one to three until the scratch is gone. It may take several attempts to buff the surface enough to remove the scratches.
Wet a cotton swab with nail polish remover. Nail polish remover may be effective for removing minor scratches from plastic watch faces.
Rub nail polish on swab into the scratch in small circular motions.
Professional products such as Jeweller's Rouge and liquid brass polishes like Simichrome also have been used to remove scratches from a watch face.
Some jewellers will buff out scratches on a watch surface for free.